- aardwolf --> aardwolves
- abacus --> abaci
- abet --> abetted
- abet --> abetting
- abhor --> abhorred
- abhor --> abhorring
- abide --> abode
- aboideau --> aboideaux
- aboiteau --> aboiteaux
- about-ship --> about-shipped
- about-ship --> about-shipping
- abscissa --> abscissae
- abut --> abutted
- abut --> abutting
- aby --> abought
- aby --> abye
- acanthus --> acanthi
- acarus --> acari
- acciaccatura --> acciaccature
- accompany --> accompanied
- acer --> acer
- acetabulum --> acetabula
- acetify --> acetified
- achaemenid --> achaemenidae
- achaemenid --> achaemenides
- acicula --> aciculae
- aciculum --> acicula
- acidify --> acidified
- acinus --> acini
- acquit --> acquitted
- acquit --> acquitting
- acre-foot --> acre-feet
- acromion --> acromia
- actinia --> actiniae
- actinozoan --> actinozoa
- ad-lib --> ad-libbed
- ad-lib --> ad-libbing
- addendum --> addenda
- address --> addrest
- adenocarcinoma --> adenocarcinomata
- adenoma --> adenomata
- adieu --> adieux
- admit --> admitted
- admit --> admitting
- adytum --> adyta
- aecidium --> aecidia
- aecium --> aecia
- aerify --> aerified
- aerobium --> aerobia
- after --> after
- agent-general --> agents-general
- aggiornamento --> aggiornamenti
- agnomen --> agnomina
- agon --> agones
- agora --> agorae
- agouti --> agouties
- aid-de-camp --> aids-de-camp
- aide-de-camp --> aides-de-camp
- aide-memoire --> aides-memoire
- air-dry --> air-dried
- airdrop --> airdropped
- airdrop --> airdropping
- airy --> airier
- airy --> airiest
- ala --> alae
- alewife --> alewives
- alkali --> alkalies
- alkalify --> alkalified
- all-arounder --> all-arounder
- allodium --> allodia
- allot --> allotted
- allot --> allotting
- alluvium --> alluvia
- ally --> allied
- alodium --> alodia
- alto-relievo alto-rilievo --> alto-relievos
- altocumulus --> altocumuli
- altostratus --> altostrati
- alula --> alulae
- alumna --> alumnae
- alumnus --> alumni
- alveolus --> alveoli
- amanuensis --> amanuenses
- ambulacrum --> ambulacra
- ameba --> amebae
- ammonify --> ammonified
- amnesty --> amnestied
- amniocentesis --> amniocenteses
- amnion --> amnia
- amoeba --> amoebae
- amoebiasis --> amoebiases
- amora --> amoraim
- amoretto --> amoretti
- amorino --> amorini
- amphiarthrosis --> amphiarthroses
- amphimixis --> amphimixes
- amphioxus --> amphioxi
- amphisbaena --> amphisbaenae
- amphithecium --> amphicia
- amphora --> amphorae
- amplify --> amplified
- ampulla --> ampullae
- amygdala --> amygdalae
- anabasis --> anabases
- anacoluthon --> anacolutha
- anacrusis --> anacruses
- anaerobium --> anaerobia
- anagnorisis --> anagnorises
- analemma --> analemmata
- analysis --> analyses
- anamnesis --> anamneses
- anamorphosis --> anamorphoses
- anaptyxis --> anatyxes
- anastomosis --> anastomoses
- anatto annatto --> annattos
- ancon ancone --> ancones
- androclinium --> androclinia
- androecium --> androecia
- androsphinx --> androsphinges
- angelfish --> angelfishes
- angioma --> angiomata
- anglify --> anglified
- angry --> angrier
- angry --> angriest
- animalculum --> animalcula
- anlage --> anlagen
- annul --> annulled
- annul --> annulling
- annulus --> annuli
- anta --> antae
- antalkali --> antalkalies
- antefix --> antefixa
- antenna --> antennae
- antependium --> antependia
- anthelion --> anthelia
- anthelix --> anthelices
- anthemion --> anthemia
- antheridium --> andtheridia
- antheridium --> antheridia
- anthodium --> anthodia
- anthozoan --> anthozoa
- anthrax --> anthraces
- anticlinorium --> anticlinoria
- antihelix --> antihelices
- antihero --> antiheroes
- antiserum --> antisera
- antithesis --> antitheses
- antitragus --> antitragi
- antrum --> antra
- anus --> anus
- aorta --> aortae
- apex --> apices
- aphelion --> aphelia
- aphis --> aphides
- apodosis --> apodoses
- apomixis --> apomixes
- aponeurosis --> aponeuroses
- apophysis --> apophyses
- aposiopesis --> aposiopeses
- apothecium --> apothecia
- apotheosis --> apotheoses
- appal appall --> appalled
- appal appall --> appalling
- apparatus --> apparatus
- appendix --> appendices
- apply --> applied
- appoggiatura --> appoggiature
- apsis --> apsides
- aqua --> aquae
- aquarium --> aquaria
- arboretum --> arboreta
- arc --> arcked
- arc --> arcking
- arc-boutant --> arcs-boutants
- arcanum --> arcana
- archegonium --> archegonia
- archer --> archer
- archerfish --> archerfishes
- archesporium --> archesporia
- archipelago --> archipelagoes
- areola --> areolae
- argali --> araglis
- argali --> argali
- argufy --> argufied
- argumentum --> argumenta
- arietta --> ariette
- arise --> arisen
- arise --> arose
- arista --> aristae
- armamentarium --> armamentaria
- arsis --> arses
- arteriosclerosis --> arterioscleroses
- arty --> artier
- arty --> artiest
- aruspex --> aruspices
- ascesis --> asceses
- ascidium --> ascidia
- ascogonium --> ascogonia
- ascus --> asci
- ashkenazi --> ashkenazim
- ashy --> ashier
- ashy --> ashiest
- aspergillosis --> aspergilloses
- aspergillum --> aspergilla
- aspergillus --> aspergilli
- aspersorium --> aspersoria
- assagai assegai --> assegais
- assaulter --> assaulter
- astragalus --> astragali
- asyndeton --> asyndeta
- atheroma --> atheromata
- atherosclerosis --> atheroscleroses
- atmolysis --> atmolyses
- atrium --> atria
- atrophy --> atrophied
- attacker --> attacker
- attorney-at-law --> attorneys-at-law
- auditorium --> auditoria
- aura --> aurae
- aureus --> aurei
- auricula --> auriculae
- aurora --> aurorae
- auspex auspice --> auspices
- auto-da-fe --> autos-da-fe
- autocatalysis --> autocatalyses
- autochthon --> autochthones
- automaton --> automata
- aver --> averred
- aver --> averring
- avitaminosis --> avitaminoses
- awake --> awoke
- awake --> awoken
- ax axis --> axes
- axilla --> axillae
- baby --> babied
- baby-sit --> baby-sat
- baby-sit --> baby-sitting
- bacchant bacchante --> bacchantes
- bacchius --> bacchii
- bacillus --> bacilli
- back-pedal --> back-pedalled
- back-pedal --> back-pedalling
- backbite --> backbit
- backbite --> backbitten
- backer --> backer
- backslide --> backslid
- backslide --> backslidden
- bacteriostasis --> bacteriostases
- baculum --> bacula
- bad --> worse
- bad --> worst
- bag --> bagged
- bag --> bagging
- baggy --> baggier
- baggy --> baggiest
- bain-marie --> bains-marie
- balky --> balkier
- balky --> balkiest
- ballista --> ballistae
- ballyrag --> ballyragged
- ballyrag --> ballyragging
- balmy --> balmier
- balmy --> balmiest
- bambino --> bambini
- ban --> bani
- ban --> banned
- ban --> banning
- bandeau --> bandeaux
- bandit --> banditti
- bandy --> bandied
- bandy --> bandier
- bandy --> bandiest
- banjo --> banjoes
- bar --> barred
- bar --> barring
- bargainer --> bargainer
- barklouse --> barklice
- barmy --> barmier
- barmy --> barmiest
- barramundi --> barramundies
- barrel --> barrelled
- barrel --> barrelling
- base basis --> bases
- basidium --> basidia
- basify --> basified
- basileus --> basileis
- basso --> bassi
- bastinado --> bastinadoes
- bat --> batted
- bat --> batting
- bateau --> bateaux
- batfish --> batfishes
- batty --> battier
- batty --> battiest
- baulky --> baulkier
- baulky --> baulkiest
- bawdy --> bawdier
- bawdy --> bawdiest
- bayer --> bayer
- bayonet --> bayonetted
- bayonet --> bayonetting
- be --> am
- be --> are
- be --> been
- be --> is
- be --> was
- be --> were
- beadsman bedesman --> beadsmen
- beady --> beadier
- beady --> beadiest
- bear --> bore
- bear --> born
- bear --> borne
- beastly --> beastlier
- beastly --> beastliest
- beat --> beaten
- beater --> beater
- beatify --> beatified
- beau --> beaux
- beautify --> beautified
- beche-de-mer --> beches-de-mer
- become --> became
- bed --> bed
- bed --> bedded
- bed --> bedding
- bedevil --> bedevilled
- bedevil --> bedevilling
- bedim --> bedimmed
- bedim --> bedimming
- beef --> beeves
- beefy --> beefier
- beefy --> beefiest
- beery --> beerier
- beery --> beeriest
- befall --> befallen
- befall --> befell
- befit --> befitted
- befit --> befitting
- befog --> befogged
- befog --> befogging
- beg --> begged
- beg --> begging
- beget --> begat
- beget --> begetting
- beget --> begot
- beget --> begotten
- begin --> began
- begin --> beginning
- begin --> begun
- begird --> begirt
- behold --> beheld
- behold --> beholden
- behoof --> behooves
- bejewel --> bejewelled
- bejewel --> bejewelling
- belie --> belying
- belly --> bellied
- belly-flop --> belly-flopped
- belly-flop --> belly-flopping
- bename --> benempt
- bend --> bent
- bendy --> bendier
- bendy --> bendiest
- benefit --> benefitted
- benefit --> benefitting
- berry --> berried
- bersagliere --> bersaglieri
- beseech --> besought
- beset --> besetting
- bespeak --> bespoke
- bespeak --> bespoken
- bestir --> bestirred
- bestir --> bestirring
- bestrew --> bestrewn
- bestride --> bestrid
- bestride --> bestridden
- bestride --> bestrode
- bet --> betted
- bet --> betting
- betake --> betaken
- betake --> betook
- bethink --> bethought
- bevel --> bevelled
- bevel --> bevelling
- bheesty bhishti --> bhishties
- bias --> biassed
- bias --> biassing
- bibliotheca --> bibliothecae
- bicentenary bicentennial --> bicennaries
- bid --> bade
- bid --> bidden
- bid --> bidding
- big --> bigger
- big --> biggest
- bijou --> bijoux
- bilbo --> bilboes
- billet-doux --> billets-doux
- billfish --> billfishes
- bimbo --> bimboes
- bin --> binned
- bin --> binning
- bind --> bound
- bing --> bing
- bird-dog --> bird-dogged
- bird-dog --> bird-dogging
- bisectrix --> bisectrices
- bit --> bitted
- bit --> bitting
- bitchy --> bitchier
- bitchy --> bitchiest
- bite --> bit
- bite --> bitten
- biter --> biter
- bitty --> bittier
- bitty --> bittiest
- bivouac --> bivouacked
- bivouac --> bivouacking
- blab --> blabbed
- blab --> blabbing
- blackberry --> blackberried
- blackfish --> blackfishes
- blackfoot --> blackfeet
- blackleg --> blacklegged
- blackleg --> blacklegging
- blastema --> blastemata
- blastula --> blastulae
- blat --> blatted
- blat --> blatting
- bleary --> blearier
- bleary --> bleariest
- bleed --> bled
- bless --> blest
- blindfish --> blindfishes
- blip --> blipped
- blip --> blipping
- blob --> blobbed
- blob --> blobbing
- bloodthirsty --> bloodthirstier
- bloodthirsty --> bloodthirstiest
- bloody --> bloodied
- bloody --> bloodier
- bloody --> bloodiest
- blot --> blotted
- blot --> blotting
- blow --> blew
- blow --> blown
- blowfish --> blowfishes
- blowsy --> blowsier
- blowsy --> blowsiest
- blowy --> blowier
- blowy --> blowiest
- blowzy --> blowzier
- blowzy --> blowziest
- blub --> blubbed
- blub --> blubbing
- blue --> bluer
- blue --> bluest
- blue-pencil --> blue-pencilled
- blue-pencil --> blue-pencilling
- bluefish --> bluefishes
- blur --> blurred
- blur --> blurring
- boarfish --> boarfishes
- bob --> bobbed
- bob --> bobbing
- body --> bodied
- bog-down --> bogged-down
- bog-down --> bogging-down
- bog-down --> bogs-down
- boletus --> boleti
- bolivar --> bolivares
- bolshevik --> bolsheviki
- bonefish --> bonefishes
- boner --> boner
- bongo --> bongoes
- bonito --> bonitoes
- bonny --> bonnier
- bonny --> bonniest
- bony --> bonier
- bony --> boniest
- booby-trap --> booby-trapped
- booby-trap --> booby-trapping
- booklouse --> booklice
- bookshelf --> bookshelves
- bootleg --> bootlegged
- bootleg --> bootlegging
- boozy --> boozier
- boozy --> booziest
- bop --> bopped
- bop --> bopping
- borax --> boraces
- borborygmus --> borborygmi
- bordereau --> bordereaux
- boschbok --> bok
- boschbok --> bushbok
- boschbok --> bushboks
- bosky --> boskier
- bosky --> boskiest
- bossy --> bossier
- bossy --> bossiest
- botargo --> botargoes
- botchy --> botchier
- botchy --> botchiest
- bother --> bother
- bottle-feed --> bottle-fed
- bouncy --> bouncier
- bouncy --> bounciest
- bounder --> bounder
- bower --> bower
- boxfish --> boxfishes
- brachium --> brachia
- brag --> bragged
- brag --> bragging
- brainchild --> brainchildren
- brainy --> brainier
- brainy --> brainiest
- branchia --> branchiae
- brant brent --> brants
- brashy --> brashier
- brashy --> brashiest
- brassy --> brassier
- brassy --> brassiest
- bravado --> bravadoes
- bravo --> bravoes
- brawny --> brawnier
- brawny --> brawniest
- break --> broke
- break --> broken
- breast-feed --> breast-fed
- breathy --> breathier
- breathy --> breathiest
- breed --> bred
- breezy --> breezier
- breezy --> breeziest
- bregma --> bregmata
- brevet --> brevetted
- brevet --> brevetting
- brim --> brimmed
- brim --> brimming
- bring --> brought
- briny --> brinier
- briny --> briniest
- britisher --> britisher
- broadcaster --> broadcaster
- broadleaf --> broadleaves
- bronchus --> bronchi
- brooder --> brooder
- broody --> broodier
- broody --> broodiest
- brother --> brethren
- brother-in-law --> brothers-in-law
- browbeat --> browbeaten
- brutify --> brutified
- bryozoan --> bryozoa
- bubbly --> bubblier
- bubbly --> bubbliest
- bubo --> buboes
- bucko --> buckoes
- bucktooth --> buckteeth
- bud --> budded
- bud --> budding
- buffalo --> buffaloes
- bug --> bugged
- bug --> bugging
- buggy --> buggier
- buggy --> buggiest
- build --> built
- bulky --> bulkier
- bulky --> bulkiest
- bulla --> bullae
- bulldog --> bulldogging
- bullshit --> bullshitted
- bullshit --> bullshitting
- bullwhip --> bullwhipped
- bullwhip --> bullwhipping
- bully --> bullied
- bullyrag --> bullyragged
- bullyrag --> bullyragging
- bum --> bummed
- bum --> bumming
- bumpy --> bumpier
- bumpy --> bumpiest
- bunchy --> bunchier
- bunchy --> bunchiest
- bund --> bunde
- bur --> burred
- bur --> burring
- bureau --> bureaux
- burly --> burlier
- burly --> burliest
- burn --> burnt
- burry --> burrier
- burry --> burriest
- bursa --> bursae
- burster --> burster
- bury --> buried
- bus --> busses
- bushel --> bushelled
- bushel --> bushelling
- bushy --> bushier
- bushy --> bushiest
- buster --> buster
- busty --> bustier
- busty --> bustiest
- busy --> busied
- busy --> busier
- busy --> busiest
- butterfish --> butterfishes
- buy --> bought
- bypass --> bypast
- byssus --> byssi
- cabal --> caballed
- cabal --> caballing
- cactus --> cacti
- caddie caddy --> caddied
- caddie caddy --> caddies
- caddie caddy --> caddying
- caduceus --> caducei
- caecum --> caeca
- caestus --> cestuses
- caesura --> caesurae
- cagey --> cagier
- cagey --> cagiest
- calamus --> calami
- calathus --> calathi
- calcaneum calcaneus --> calcanei
- calcify --> calcified
- calculus --> calculi
- caldarium --> caldaria
- calf --> calves
- calico --> calicoes
- calix --> calices
- callus --> calli
- calx --> calces
- calyx --> calyces
- cambium --> cambia
- camera --> camerae
- camper --> camper
- can --> canned
- can --> canning
- canal --> canalled
- canal --> canalling
- canaliculus --> canaliculi
- cancel --> cancelled
- cancel --> cancelling
- candelabrum --> candelabra
- candlefish --> candlefishes
- candy --> candied
- canny --> cannier
- canny --> canniest
- canopy --> canopied
- canter --> canter
- canthus --> canthi
- canty --> cantier
- canty --> cantiest
- canula --> canulae
- canzone --> canzoni
- cap --> capped
- cap --> capping
- capitulum --> capitula
- capriccio --> capricci
- caput --> capita
- carabiniere --> carabinieri
- carbonado --> carbonadoes
- carburet --> carburetted
- carburet --> carburetting
- carcinoma --> carcinomata
- cargo --> cargoes
- carillon --> carillonned
- carillon --> carillonning
- carina --> carinae
- carnify --> carnified
- carny --> carnied
- carol --> carolled
- carol --> carolling
- carolus --> caroli
- carpogonium --> carpogonia
- carpus --> carpi
- carry --> carried
- carrying-on --> carryings-on
- caryatid --> carides
- caryopsis --> caryopses
- caryopsis --> caryopsides
- casefy --> casefied
- caster --> caster
- castrato --> castrati
- cat --> catted
- cat --> catting
- catabasis --> catabases
- cataclasis --> cataclases
- catalo --> cataloes
- catalysis --> catalyses
- catch --> caught
- catchy --> catchier
- catchy --> catchiest
- catena --> catenae
- catfish --> catfishes
- cathar --> cathari
- cathexis --> cathexes
- catnap --> catnapped
- catnap --> catnapping
- cattalo --> cattaloes
- catty --> cattier
- catty --> cattiest
- caudex --> caudices
- caulis --> caules
- cavatina --> cavatine
- cavefish --> cavefishes
- cavetto --> cavetti
- cavil --> cavilled
- cavil --> cavilling
- cavo-rilievo --> cavo-rilievi
- cecum --> ceca
- cella --> cellae
- cembalo --> cembali
- centesimo --> centesimi
- centrum --> centra
- cephalothorax --> cephalothoraces
- cer --> cer
- cercaria --> cercariae
- cercaria --> cercariiae
- cercus --> cerci
- cerebellum --> cerebella
- cerebrum --> cerebra
- certify --> certified
- cervix --> cervices
- cesura --> cesurae
- chaeta --> chaetae
- chalaza --> chalazae
- chalutz --> chalutzim
- chancy --> chancier
- chancy --> chanciest
- channel --> channelled
- channel --> channelling
- chap --> chapped
- chap --> chapping
- chapati --> chapaties
- chapatti --> chapatties
- chapeau --> chapeaux
- char --> charred
- char --> charring
- chary --> charier
- chary --> chariest
- chasid --> chasidim
- chassid --> chassidim
- chat --> chatted
- chat --> chatting
- chateau --> chateaux
- chatty --> chattier
- chatty --> chattiest
- chazan --> chazanim
- cheder --> chadarim
- cheder --> chedarim
- cheeky --> cheekier
- cheeky --> cheekiest
- cheery --> cheerier
- cheery --> cheeriest
- cheesy --> cheesier
- cheesy --> cheesiest
- chef-d'ouvre --> chefs-d'ouvre
- chela --> chelae
- chelicera --> chelicerae
- cherub --> cherubim
- chesty --> chestier
- chesty --> chestiest
- cheval-de-frise --> chevaux-de-frise
- chewy --> chewier
- chewy --> chewiest
- chiasma --> chiasmata
- chiasmus --> chiasmi
- chide --> chid
- chide --> chidden
- child --> children
- chilli --> chillies
- chilly --> chillier
- chilly --> chilliest
- chin --> chinned
- chin --> chinning
- chintzy --> chintzier
- chintzy --> chintziest
- chip --> chipped
- chip --> chipping
- chippy --> chippier
- chippy --> chippiest
- chisel --> chiselled
- chisel --> chiselling
- chitarrone --> chitarroni
- chitchat --> chitchatted
- chitchat --> chitchatting
- chiv --> chivved
- chiv --> chivving
- chivy --> chevied
- chivy --> chevies
- chivy --> chevying
- chivy --> chivied
- chivy --> chivvied
- chivy --> chivvies
- chivy --> chivvying
- chlamys --> chlamydes
- chlamys --> chlamyses
- chondrify --> chondrified
- chondroma --> chondromata
- choose --> chose
- choose --> chosen
- choosy --> choosier
- choosy --> choosiest
- chop --> chopped
- chop --> chopping
- choppy --> choppier
- choppy --> choppiest
- choragus --> choragi
- choriambus --> choriambi
- chou --> choux
- chromonema --> chromonemata
- chrysalis --> chrysalides
- chubby --> chubbier
- chubby --> chubbiest
- chuffy --> chuffier
- chuffy --> chuffiest
- chug --> chugged
- chug --> chugging
- chum --> chummed
- chum --> chumming
- chummy --> chummier
- chummy --> chummiest
- chunky --> chunkier
- chunky --> chunkiest
- churchy --> churchier
- churchy --> churchiest
- chuvash --> chuvashes
- ciborium --> ciboria
- cicada --> cicadae
- cicala --> cicale
- cicatrix --> cicatrices
- cicerone --> ciceroni
- cicisbeo --> cicisbei
- cilium --> cilia
- cimex --> cimices
- cinerarium --> cineraria
- cingulum --> cingula
- cirrocumulus --> cirrocumuli
- cirrostratus --> cirrostrati
- cirrus --> cirri
- cisco --> ciscoes
- cisterna --> cisternae
- citify --> citified
- clad --> cladding
- clam --> clammed
- clam --> clamming
- clammy --> clammier
- clammy --> clammiest
- clap --> clapped
- clap --> clapping
- clarify --> clarified
- clarino --> clani
- clarino --> clanos
- claro --> claroes
- classify --> classified
- classy --> classier
- classy --> classiest
- cleanly --> cleanlier
- cleanly --> cleanliest
- cleave --> cleft
- cleave --> clove
- cleave --> cloven
- clem --> clemmed
- clem --> clemming
- clepe --> clept
- clepe --> ycleped
- clepe --> yclept
- clepsydra --> clepsydrae
- clerkly --> clerklier
- clerkly --> clerkliest
- clinandrium --> clinandria
- cling --> clung
- clingfish --> clingfishes
- clip --> clipped
- clip --> clipping
- clitellum --> clitella
- cloaca --> cloacae
- clog --> clogged
- clog --> clogging
- clop --> clopped
- clop --> clopping
- clostridium --> clostridia
- clot --> clotted
- clot --> clotting
- clothe --> clad
- cloudy --> cloudier
- cloudy --> cloudiest
- cloverleaf --> cloverleaves
- club --> clubbed
- club --> clubbing
- clubby --> clubbier
- clubby --> clubbiest
- clumsy --> clumsier
- clumsy --> clumsiest
- clypeus --> clypei
- co-star --> co-starred
- co-star --> co-starring
- coagulum --> coagula
- coalfish --> coalfishes
- coccus --> cocci
- coccyx --> coccyges
- cochlea --> cochleae
- cockneyfy --> cockneyfied
- cocky --> cockier
- cocky --> cockiest
- cod --> codded
- cod --> codding
- coder --> coder
- codex --> codices
- codfish --> codfishes
- codify --> codified
- coelenteron --> coelentera
- coenurus --> coenuri
- cog --> cogged
- cog --> cogging
- cognomen --> cognomina
- coif --> coiffed
- coif --> coiffing
- coleorhiza --> coleorhizae
- collegium --> collegia
- colloquium --> colloquia
- colluvium --> colluvia
- colly --> collied
- colly --> collier
- colly --> colliest
- collyrium --> collyria
- colon --> cola
- colon --> colones
- colossus --> colossi
- columbarium --> columbaria
- columella --> columellae
- coma --> comae
- comatula --> comatulae
- combat --> combatted
- combat --> combatting
- come --> came
- comedo --> comedones
- comely --> comelier
- comely --> comeliest
- comfy --> comfier
- comfy --> comfiest
- commando --> commandoes
- commit --> committed
- commit --> committing
- compel --> compelled
- compel --> compelling
- complot --> complotted
- complot --> complotting
- comply --> complied
- con --> conned
- con --> conning
- concertante --> concertanti
- concertino --> concertini
- concerto --> concerti
- concha --> conchae
- concur --> concurred
- concur --> concurring
- condottiere --> condottieri
- condyloma --> condylomata
- confab --> confabbed
- confab --> confabbing
- confer --> conferred
- confer --> conferring
- conferva --> confervae
- congius --> congii
- conidium --> conidia
- conjunctiva --> conjunctivae
- conquistador --> conquistadores
- consortium --> consortia
- contagium --> contagia
- continuum --> continua
- contralto --> contralti
- control --> controlled
- control --> controlling
- conversazione --> conversazioni
- convolvulus --> convolvuli
- cook-general --> cooks-general
- coopt --> co-opted
- coopt --> co-opting
- coopts --> co-opts
- coordinate --> co-ordinate
- coordinate --> co-ordinated
- coordinate --> co-ordinates
- coordinate --> co-ordinating
- cop --> copped
- cop --> copping
- copula --> copulae
- copy --> copied
- coquet --> coquetted
- coquet --> coquetting
- corbicula --> corbiculae
- corium --> coria
- cornea --> corneae
- cornu --> cornua
- corny --> cornier
- corny --> corniest
- corona --> coronae
- corpus --> corpora
- corral --> corralled
- corral --> corralling
- corrigendum --> corrigenda
- cortex --> cortices
- cortina --> cortinae
- corybant --> corybantes
- coryphaeus --> coryphaei
- costa --> costae
- costly --> costlier
- costly --> costliest
- costumer --> costumer
- cosy --> cosier
- cosy --> cosiest
- cothurnus --> cothurni
- counsel --> counselled
- counsel --> counselling
- counterfeiter --> counterfeiter
- counterplot --> counterplotted
- counterplot --> counterplotting
- countersink --> countersank
- countersink --> countersunk
- court-martial --> court-martialled
- court-martial --> court-martialling
- courtly --> courtlier
- courtly --> courtliest
- couteau --> couteaux
- cowfish --> cowfishes
- coxa --> coxae
- cozy --> cozier
- cozy --> coziest
- crab --> crabbed
- crab --> crabbing
- crabby --> crabbier
- crabby --> crabbiest
- cracker --> cracker
- crafty --> craftier
- crafty --> craftiest
- craggy --> craggier
- craggy --> craggiest
- cram --> crammed
- cram --> cramming
- crambo --> cramboes
- cranium --> crania
- cranky --> crankier
- cranky --> crankiest
- crap --> crapped
- crap --> crapping
- crasher --> crasher
- crasis --> crases
- crawfish --> crawfishes
- crawly --> crawlier
- crawly --> crawliest
- crayfish --> crayfishes
- crazy --> crazier
- crazy --> craziest
- creamer --> creamer
- creamy --> creamier
- creamy --> creamiest
- credendum --> credenda
- creep --> crept
- creepy --> creepier
- creepy --> creepiest
- crematorium --> crematoria
- crescendo --> crescendi
- crib --> cribbed
- crib --> cribbing
- cribellum --> cribella
- crisis --> crises
- crispy --> crispier
- crispy --> crispiest
- crissum --> crissa
- crista --> cristae
- criterion --> criteria
- crop --> cropped
- crop --> cropping
- crossbreed --> crossbred
- crosscut --> crosscutting
- crucify --> crucified
- crumbly --> crumblier
- crumbly --> crumbliest
- crumby --> crumbier
- crumby --> crumbiest
- crummy --> crummier
- crummy --> crummiest
- crus --> crura
- crusado --> crusadoes
- crusty --> crustier
- crusty --> crustiest
- crux --> cruces
- cruzado --> cruzadoes
- cry --> cried
- cry --> crying
- cry --> cryings
- ctenidium --> ctenidia
- cub --> cubbed
- cub --> cubbing
- cubiculum --> cubicula
- cudgel --> cudgelled
- cudgel --> cudgelling
- cul-de-sac --> culs-de-sac
- culex --> culices
- culpa --> culpae
- cultus --> culti
- cumulonimbus --> cumulonimbi
- cumulostratus --> cumulostrati
- cumulus --> cumuli
- cup --> cupped
- cup --> cupping
- cupel --> cupelled
- cupel --> cupelling
- curet --> curetted
- curet --> curettes
- curet --> curetting
- curia --> curiae
- curly --> curlier
- curly --> curliest
- curriculum --> curricula
- curry --> curried
- curse --> curst
- curtsy --> curtsied
- curvet --> curvetted
- curvet --> curvetting
- customer --> customer
- custos --> custodes
- cut --> cutting
- cute --> cuter
- cuticula --> cuticulae
- cutis --> cutes
- cuttlefish --> cuttlefishes
- cyclops --> cyclopes
- cyclosis --> cycloses
- cylix --> cylices
- cylix --> cylikes
- cyma --> cymae
- cymatium --> cymatia
- cypsela --> cypselae
- cysticercus --> cysticerci
- dab --> dabbed
- dab --> dabbing
- dado --> dadoes
- daffy --> daffier
- daffy --> daffiest
- dag --> dagged
- dag --> dagging
- dago --> dagoes
- daimio --> daymio
- daimio --> daymios
- dainty --> daintier
- dainty --> daintiest
- dally --> dallied
- dam --> dammed
- dam --> damming
- damnify --> damnified
- damselfish --> damselfishes
- dandify --> dandified
- dandy --> dandier
- dandy --> dandiest
- dap --> dapped
- dap --> dapping
- datum --> data
- daughter-in-law --> daughters-in-law
- deadly --> deadlier
- deadly --> deadliest
- deal --> dealt
- dealer --> dealer
- dealfish --> dealfishes
- debar --> debarred
- debar --> debarring
- debug --> debugged
- debug --> debugging
- debus --> debussed
- debus --> debusses
- debus --> debussing
- decalcify --> decalcified
- decemvir --> decemviri
- decennium --> decennia
- decidua --> deciduae
- declassify --> declassified
- decontrol --> decontrolled
- decontrol --> decontrolling
- decry --> decried
- deep-fry --> deep-fried
- deepfreeze --> deep-freeze
- deepfreeze --> deep-freezed
- deepfreeze --> deep-freezes
- deeply --> deeper
- defer --> deferred
- defer --> deferring
- definiendum --> definienda
- definiens --> definientia
- defy --> defied
- degas --> degassed
- degas --> degasses
- degas --> degassing
- dehumidify --> dehumidified
- deify --> deified
- delphinium --> delphinia
- demit --> demitted
- demit --> demitting
- demob --> demobbed
- demob --> demobbing
- demulsify --> demulsified
- demur --> demurred
- demur --> demurring
- demystify --> demystified
- den --> denned
- den --> denning
- denarius --> denarii
- denazify --> denazified
- denitrify --> denitrified
- dentalium --> dentalia
- deny --> denied
- dermatosis --> dermatoses
- descry --> descried
- deserter --> deserter
- desideratum --> desiderata
- desperado --> desperadoes
- deter --> deterred
- deter --> deterring
- detoxify --> detoxified
- devil --> devilled
- devil --> devilling
- devilfish --> devilfishes
- devitrify --> devitrified
- dewy --> dewier
- dewy --> dewiest
- diaeresis --> diaereses
- diaeresis --> diaerses
- diagnosis --> diagnoses
- diagram --> diagrammed
- diagram --> diagramming
- dial --> dialled
- dial --> dialling
- dialysis --> dialyses
- diaphysis --> diaphyses
- diapophysis --> diapophyses
- diarthrosis --> diarthroses
- diastalsis --> diastalses
- diastasis --> diastases
- diastema --> diastemata
- diathesis --> diathses
- diazo --> diazoes
- dib --> dibbed
- dib --> dibbing
- dibbuk --> dibbukkim
- dicey --> dicier
- dicey --> diciest
- dichasium --> dichasia
- dictum --> dicta
- dido --> didoes
- die --> dying
- dieresis --> diereses
- diesis --> dieses
- differentia --> differentiae
- dig --> digging
- dig --> dug
- dignify --> dignified
- dilettante --> dilettanti
- dilly-dally --> dilly-dallied
- diluvium --> diluvia
- dim --> dimmed
- dim --> dimmer
- dim --> dimmest
- dim --> dimming
- dimer --> dimer
- din --> dinned
- din --> dinning
- dingo --> dingoes
- dingy --> dingier
- dingy --> dingiest
- dinky --> dinkier
- dinky --> dinkiest
- dip --> dipped
- dip --> dipping
- diplococcus --> diplococci
- dippy --> dippier
- dippy --> dippiest
- director-general --> directors-general
- dirty --> dirtied
- dirty --> dirtier
- dirty --> dirtiest
- disannul --> disannulled
- disannul --> disannulling
- disbar --> disbarred
- disbar --> disbarring
- disbud --> disbudded
- disbud --> disbudding
- discobolos discobolus --> discoboli
- discus --> disci
- disembody --> disembodied
- disembowel --> disembowelled
- disembowel --> disembowelling
- disenthral --> disenthralls
- disenthral disenthrall --> disenthralled
- disenthral disenthrall --> disenthralling
- disenthrall --> disenthrals
- dishevel --> dishevelled
- dishevel --> dishevelling
- dishy --> dishier
- dishy --> dishiest
- disinter --> disinterred
- disinter --> disinterring
- dispel --> dispelled
- dispel --> dispelling
- disqualify --> disqualified
- dissatisfy --> dissatisfied
- distil distill --> distilled
- distil distill --> distilling
- diva --> dive
- dive --> dove
- diversify --> diversified
- diverticulum --> diverticula
- divertimento --> divertimenti
- divvy --> divvied
- dizzy --> dizzied
- dizzy --> dizzier
- dizzy --> dizziest
- djinni djinny --> djinn
- do --> did
- do --> done
- dodgy --> dodgier
- dodgy --> dodgiest
- dodo --> dodoes
- dog --> dogged
- dog --> dogging
- dogfish --> dogfishes
- dogleg --> doglegged
- dogleg --> doglegging
- dogma --> dogmata
- dogtooth --> dogteeth
- dollarfish --> dollarfishes
- dolly --> dollied
- domatium --> domatia
- domino --> dominoes
- don --> donned
- don --> donning
- dopey --> dopier
- dopey --> dopiest
- dormouse --> dormice
- dorsum --> dorsa
- dot --> dotted
- dot --> dotting
- dotty --> dottier
- dotty --> dottiest
- doughty --> doughtier
- doughty --> doughtiest
- doughy --> doughier
- doughy --> doughiest
- dow --> dought
- dowdy --> dowdier
- dowdy --> dowdiest
- dowie dowy --> dowier
- dowie dowy --> dowiest
- downer --> downer
- downy --> downier
- downy --> downiest
- dozy --> dozier
- dozy --> doziest
- drab --> drabbed
- drab --> drabber
- drab --> drabbest
- drab --> drabbing
- drachma --> drachmae
- drafty --> draftier
- drafty --> draftiest
- drag --> dragged
- drag --> dragging
- draggy --> draggier
- draggy --> draggiest
- draughty --> draughtier
- draughty --> draughtiest
- draw --> drawn
- draw --> drew
- drawknife --> drawknives
- dream --> dreamt
- dreamy --> dreamier
- dreamy --> dreamiest
- dreary --> drearier
- dreary --> dreariest
- dreggy --> dreggier
- dreggy --> dreggiest
- dresser --> dresser
- dressy --> dressier
- dressy --> dressiest
- drink --> drank
- drink --> drunk
- drip --> dripped
- drip --> dripping
- drippy --> drippier
- drippy --> drippiest
- drive --> driven
- drive --> drove
- drivel --> drivelled
- drivel --> drivelling
- drop --> dropped
- drop --> dropping
- drosophila --> drosophilae
- drowsy --> drowsier
- drowsy --> drowsiest
- drub --> drubbed
- drub --> drubbing
- drug --> drugged
- drug --> drugging
- drum --> drummed
- drum --> drumming
- drumfish --> drumfishes
- dry --> dried
- dry --> drier
- dry --> driest
- dry --> dryer
- dry --> dryest
- dryad --> dryades
- dub --> dubbed
- dub --> dubbing
- duel --> duelled
- duel --> duelling
- dulcify --> dulcified
- dummy --> dummied
- dumpy --> dumpier
- dumpy --> dumpiest
- dun --> dunned
- dun --> dunner
- dun --> dunnest
- dun --> dunning
- duo --> dui
- duodenum --> duona
- duodenum --> duonas
- dupondius --> dupondii
- dusky --> duskier
- dusky --> duskiest
- dusty --> dustier
- dusty --> dustiest
- duumvir --> duumviri
- dwarf --> dwarves
- dwell --> dwelt
- dybbuk --> dybbukkim
- early --> earlier
- early --> earliest
- earthly --> earthlier
- earthly --> earthliest
- earthy --> earthier
- earthy --> earthiest
- easter --> easter
- eastsider --> eastsider
- easy --> easied
- easy --> easier
- easy --> easiest
- eat --> ate
- eat --> eaten
- eavesdrop --> eavesdropped
- eavesdrop --> eavesdropping
- ecchymosis --> ecchymoses
- ecclesia --> ecclesiae
- ecdysis --> ecdyses
- echidna --> echidnae
- echinococcus --> echinococci
- echinus --> echini
- echo --> echoes
- ectozoan --> ectozoa
- eddo --> eddoes
- eddy --> eddied
- edema --> edemata
- edema oedema --> oedemata
- edger --> edger
- edgy --> edgier
- edgy --> edgiest
- edify --> edified
- eerie --> eerier
- eerie --> eeriest
- effluvium --> effluvia
- ego-trip --> ego-tripped
- ego-trip --> ego-tripping
- eidolon --> eidola
- eisegesis --> eisegeses
- eisteddfod --> eisteddfodau
- electrify --> electrified
- elenchus --> elenchi
- elf --> elves
- ellipsis --> ellipses
- eluvium --> eluvia
- elytron elytrum --> elytra
- embargo --> embargoes
- embed --> embedded
- embed --> embedding
- embody --> embodied
- embolus --> emboli
- embus --> embussed
- embus --> embusses
- embus --> embussing
- emit --> emitted
- emit --> emitting
- empanel --> empanelled
- empanel --> empanelling
- emphasis --> emphases
- emporium --> emporia
- empty --> emptied
- empty --> emptier
- empty --> emptiest
- emulsify --> emulsified
- enamel --> enamelled
- enamel --> enamelling
- enarthrosis --> enarthroses
- encephalitis --> encephalitides
- encephaloma --> encephalomata
- encephalon --> encephala
- enchiridion --> enchiridia
- enchondroma --> enchondromata
- encomium --> encomia
- endameba --> endamebae
- endamoeba --> endamoebae
- endocardium --> endocardia
- endocranium --> endocrania
- endometrium --> endometria
- endosteum --> endostea
- endostosis --> endostoses
- endothecium --> endothecia
- endothelioma --> endotheliomata
- endothelium --> endothelia
- endozoan --> endozoa
- enema --> enemata
- englut --> englutted
- englut --> englutting
- enneahedron --> enneahedra
- enrol enroll --> enrolled
- enrol enroll --> enrolling
- ens --> entia
- entameba --> entamebae
- entamoeba --> entamoebae
- entasis --> entases
- enteron --> entera
- enthral enthrall --> enthralled
- enthral enthrall --> enthralling
- entozoan entozoon --> entozoa
- entrammel --> entrammelled
- entrammel --> entrammelling
- entrap --> entrapped
- entrap --> entrapping
- envy --> envied
- enwind --> enwound
- enwrap --> enwrapped
- enwrap --> enwrapping
- epencephalon --> epencephala
- epenthesis --> epentheses
- epexegesis --> epexegeses
- ephemera --> ephemerae
- ephemeris --> ephemerides
- ephemeron --> ephemera
- ephor --> ephori
- epicalyx --> epicalyces
- epicanthus --> epicanthi
- epicardium --> epicardia
- epicedium --> epicedia
- epiclesis --> epicleses
- epididymis --> epididymides
- epigastrium --> epigastria
- epiglottis --> epiglottides
- epimysium --> epimysia
- epiphenomenon --> epiphenomena
- epiphysis --> epiphyses
- episternum --> episterna
- epithalamion epithalamium --> epithalamia
- epithelioma --> epitheliomata
- epithelium --> epithelia
- epizoan epizoon --> epizoa
- epyllion --> epyllia
- equal --> equalled
- equal --> equalling
- equilibrium --> equilibria
- equip --> equipped
- equip --> equipping
- equisetum --> equiseta
- eringo --> eringoes
- erratum --> errata
- eryngo --> eryngoes
- esophagus --> esophagi
- esophagus oesophagus --> oesophagi
- espy --> espied
- esterify --> esterified
- estop --> estopped
- estop --> estopping
- etherify --> etherified
- etymon --> etyma
- eucalyptus --> eucalypti
- eupatrid --> eupatridae
- euripus --> euripi
- exanthema --> exanthemata
- excel --> excelled
- excel --> excelling
- executrix --> executrices
- exegesis --> exegeses
- exemplify --> exemplified
- exemplum --> exempla
- exordium --> exordia
- exostosis --> exostoses
- expel --> expelled
- expel --> expelling
- extol extoll --> extolled
- extol extoll --> extolling
- extremum --> extrema
- eyetooth --> eyeteeth
- eyrir --> aurar
- fabliau --> fabliaux
- facet --> facetted
- facet --> facetting
- facia --> faciae
- facula --> faculae
- faeroese --> faeroese
- fag --> fagged
- fag --> fagging
- faker --> faker
- fall --> fallen
- fall --> fell
- fallfish --> fallfishes
- falsify --> falsified
- famulus --> famuli
- fan --> fanned
- fan --> fanning
- fancy --> fancied
- fancy --> fancier
- fancy --> fanciest
- fantasy --> fantasied
- far --> farther
- far --> further
- farmer-general --> farmers-general
- faroese --> faroese
- farrago --> farragoes
- fascia --> fasciae
- fasciculus --> fasciculi
- fat --> fatted
- fat --> fatter
- fat --> fattest
- fat --> fatting
- father-in-law --> fathers-in-law
- fatso --> fatsoes
- fatty --> fattier
- fatty --> fattiest
- faulty --> faultier
- faulty --> faultiest
- fauna --> faunae
- featherbed --> featherbedded
- featherbed --> featherbedding
- fecula --> feculae
- fedayee --> fedayeen
- feed --> fed
- feed fee --> feed
- feel felt --> felt
- feisty --> feistier
- feisty --> feistiest
- fellah --> fellaheen
- fellah --> fellahin
- feller --> feller
- femur --> femora
- fenestella --> fenestellae
- fenestra --> fenestrae
- feria --> feriae
- fermata --> fermate
- ferry --> ferried
- ferula --> ferulae
- festschrift --> festschriften
- fetial --> fetiales
- fez --> fezzes
- fiasco --> fiascoes
- fib --> fibbed
- fib --> fibbing
- fibrilla --> fibrillae
- fibroma --> fibromata
- fibula --> fibulae
- fico --> ficoes
- fiddly --> fiddlier
- fiddly --> fiddliest
- fideicommissum --> fideicommissa
- fieldmouse --> fieldmice
- fig --> figged
- fig --> figging
- fig. --> figs.
- fight --> fought
- filaria --> filariiae
- filefish --> filefishes
- filmy --> filmier
- filmy --> filmiest
- filthy --> filthier
- filthy --> filthiest
- filum --> fila
- fimbria --> fimbriae
- fin --> finned
- fin --> finning
- find --> found
- fine-draw --> fine-drawn
- fine-draw --> fine-drew
- finny --> finnier
- finny --> finniest
- first-rater --> first-rater
- first-stringer --> first-stringer
- fish --> fishes
- fishwife --> fishwives
- fishy --> fishier
- fishy --> fishiest
- fistula --> fistulae
- fit --> fitted
- fit --> fitter
- fit --> fittest
- fit --> fitting
- flabby --> flabbier
- flabby --> flabbiest
- flabellum --> flabella
- flag --> flagged
- flag --> flagging
- flagellum --> flagella
- flaggy --> flaggier
- flaggy --> flaggiest
- flagstaff --> flagstaves
- flaky --> flakier
- flaky --> flakiest
- flam --> flammed
- flam --> flamming
- flambeau --> flambeaux
- flamen --> flamines
- flamingo --> flamingoes
- flannel --> flannelled
- flannel --> flannelling
- flap --> flapped
- flap --> flapping
- flasher --> flasher
- flashy --> flashier
- flashy --> flashiest
- flat --> flatted
- flat --> flatter
- flat --> flattest
- flat --> flatting
- flatfish --> flatfishes
- flatfoot --> flatfeet
- flaunty --> flauntier
- flaunty --> flauntiest
- fledgy --> fledgier
- fledgy --> fledgiest
- flee --> fled
- fleecy --> fleecier
- fleecy --> fleeciest
- fleshly --> fleshlier
- fleshly --> fleshliest
- fleshy --> fleshier
- fleshy --> fleshiest
- fleur-de-lis --> fleurs-de-lis
- fleur-de-lys --> fleurs-de-lys
- flighty --> flightier
- flighty --> flightiest
- flimflam --> flimflammed
- flimflam --> flimflamming
- flimsy --> flimsier
- flimsy --> flimsiest
- fling --> flung
- flinty --> flintier
- flinty --> flintiest
- flip --> flipped
- flip --> flipping
- flip-flop --> flip-flopped
- flip-flop --> flip-flopping
- flit --> flitted
- flit --> flitting
- flittermouse --> flittermice
- floaty --> floatier
- floaty --> floatiest
- flocculus --> flocculi
- floccus --> flocci
- flog --> flogged
- flog --> flogging
- floodlight --> floodlit
- flop --> flopped
- flop --> flopping
- floppy --> floppier
- floppy --> floppiest
- flora --> florae
- floreat --> floreant.
- florilegium --> florilegia
- flossy --> flossier
- flossy --> flossiest
- flower-de-luce --> flowers-de-luce
- flub --> flubbed
- flub --> flubbing
- fluffy --> fluffier
- fluffy --> fluffiest
- fluky --> flukier
- fluky --> flukiest
- flurry --> flurried
- fly --> flew
- fly --> flown
- flyblow --> flyblew
- flyblow --> flyblown
- flyleaf --> flyleaves
- foamy --> foamier
- foamy --> foamiest
- fob --> fobbed
- fob --> fobbing
- focus --> foci
- fog --> fogged
- fog --> fogging
- foggy --> foggier
- foggy --> foggiest
- folder --> folder
- folium --> folia
- folksy --> folksier
- folksy --> folksiest
- foolhardy --> foolhardier
- foolhardy --> foolhardiest
- foot --> feet
- footslog --> footslogged
- footslog --> footslogging
- foramen --> foramina
- forbear --> forbore
- forbear --> forborne
- forbid --> forbad
- forbid --> forbade
- forbid --> forbidden
- forbid --> forbidding
- force-feed --> force-fed
- forceps --> forceps
- fordo --> fordid
- fordo --> fordone
- fore-and-after --> fore-and-after
- foredo --> foredid
- foredo --> foredone
- forefoot --> forefeet
- forego --> foregone
- forego --> forewent
- foreigner --> foreigner
- foreknow --> foreknew
- foreknow --> foreknown
- forerun --> foreran
- forerun --> forerunning
- foresee --> foresaw
- foresee --> foreseen
- foreshow --> foreshown
- forespeak --> forespoke
- forespeak --> forespoken
- forest --> forest
- foretell --> foretold
- foretooth --> foreteeth
- forget --> forgetting
- forget --> forgot
- forget --> forgotten
- forgive --> forgave
- forgive --> forgiven
- forgo --> forgone
- forgo --> forwent
- format --> formatted
- format --> formatting
- formicarium --> formicaria
- formula --> formulae
- fornix --> fornices
- forsake --> forsaken
- forsake --> forsook
- forspeak --> forspoke
- forspeak --> forspoken
- forswear --> forswore
- forswear --> forsworn
- fortify --> fortified
- fortis --> fortes
- forum --> fora
- fossa --> fossae
- founder --> founder
- fovea --> foveae
- foveola --> foveolae
- foxtrot --> foxtrotted
- foxtrot --> foxtrotting
- foxy --> foxier
- foxy --> foxiest
- fractocumulus --> fractocumuli
- fractostratus --> fractostrati
- fraenum --> fraena
- frap --> frapped
- frap --> frapping
- fratchy --> fratchier
- fratchy --> fratchiest
- frau --> frauen
- freaky --> freakier
- freaky --> freakiest
- free --> freer
- free --> freest
- freeze --> froze
- freeze --> frozen
- freeze-dry --> freeze-dried
- frenchify --> frenchified
- frenchy --> frenchier
- frenchy --> frenchiest
- frenulum --> frenula
- frenum --> frena
- frenzy --> frenzied
- fresco --> frescoes
- fret --> fretted
- fret --> fretting
- fricandeau --> fricandeaux
- fricando --> fricandoes
- friendly --> friendlier
- friendly --> friendliest
- frig --> frigged
- frig --> frigging
- frijol --> frijoles
- frisky --> friskier
- frisky --> friskiest
- frit fritt --> fritted
- frit fritt --> fritting
- frivol --> frivolled
- frivol --> frivolling
- frizzly --> frizzlier
- frizzly --> frizzliest
- frizzy --> frizzier
- frizzy --> frizziest
- frog --> frogged
- frog --> frogging
- frogfish --> frogfishes
- frolic --> frolicked
- frolic --> frolicking
- frons --> frontes
- frosty --> frostier
- frosty --> frostiest
- frouzy --> frouzier
- frouzy --> frouziest
- frowsy --> frowsier
- frowsy --> frowsiest
- frowzy --> frowzier
- frowzy --> frowziest
- fructify --> fructified
- fruity --> fruitier
- fruity --> fruitiest
- frustum --> frusta
- fry --> fried
- fucus --> fuci
- fuel --> fuelled
- fuel --> fuelling
- fulcrum --> fulcra
- fulfil fulfill --> fulfilled
- fulfil fulfill --> fulfilling
- fumatorium --> fumatoria
- fun --> funned
- fun --> funning
- fundus --> fundi
- fungus --> fungi
- funiculus --> funiculi
- funky --> funkier
- funky --> funkiest
- funnel --> funnelled
- funnel --> funnelling
- funny --> funnier
- funny --> funniest
- fur --> furred
- fur --> furring
- furcula --> furculae
- furculum --> furcula
- furfur --> furfures
- furry --> furrier
- furry --> furriest
- fussy --> fussier
- fussy --> fussiest
- fusty --> fustier
- fusty --> fustiest
- fuzzy --> fuzzier
- fuzzy --> fuzziest
- gabby --> gabbier
- gabby --> gabbiest
- gad --> gadded
- gad --> gadding
- gag --> gagged
- gag --> gagging
- gainsay --> gainsaid
- galea --> galeae
- gam --> gammed
- gam --> gamming
- gambado --> gambadoes
- gambol --> gambolled
- gambol --> gambolling
- gametangium --> gametangia
- gametoecium --> gametoecia
- gammadion --> gammadia
- gammy --> gammier
- gammy --> gammiest
- gamy --> gamier
- gamy --> gamiest
- gan --> ganned
- gan --> ganning
- ganglion --> ganglia
- gap --> gapped
- gap --> gapping
- garfish --> garfishes
- gas --> gas
- gas --> gassed
- gas --> gasses
- gas --> gasses
- gas --> gassing
- gasify --> gasified
- gassy --> gassier
- gassy --> gassiest
- gastrula --> gastrulae
- gateau --> gateaux
- gaudy --> gaudier
- gaudy --> gaudiest
- gauzy --> gauzier
- gauzy --> gauziest
- gawky --> gawkier
- gawky --> gawkiest
- gazebo --> gazeboes
- gecko --> geckoes
- gel --> gelled
- gel --> gelling
- geld --> gelt
- gelsemium --> gelsemia
- gem --> gemmed
- gem --> gemming
- gemeinschaft --> gemeinschaften
- gemma --> gemmae
- gemsbok --> gemboks
- gemsbuck --> gembucks
- gen-up --> genned-up
- gen-up --> genning-up
- gen-up --> gens-up
- generatrix --> generatrices
- genesis --> geneses
- genius --> genii
- gens --> gentes
- gentleman-at-arms --> gentlemen-at-arms
- gentleman-farmer --> gentlemen-farmers
- genu --> genua
- genus --> genera
- genus --> genus
- germen --> germina
- gesellschaft --> gesellschaften
- gestalt --> gestalten
- get --> getting
- get --> got
- get --> gotten
- ghastly --> ghastlier
- ghastly --> ghastliest
- ghetto --> ghettoes
- ghostly --> ghostlier
- ghostly --> ghostliest
- ghostwrite --> ghostwritten
- ghostwrite --> ghostwrote
- gib --> gibbed
- gib --> gibbing
- giddy --> giddied
- giddy --> giddier
- giddy --> giddiest
- giftwrap --> giftwrapped
- giftwrap --> giftwrapping
- gig --> gigged
- gig --> gigging
- gild --> gilt
- gin --> gan
- gin --> ginned
- gin --> ginning
- gingiva --> gingivae
- gingko --> gingkoes
- ginglymus --> ginglymi
- ginkgo --> ginkgoes
- gip --> gipped
- gip --> gipping
- gippo --> gippoes
- gird --> girt
- give --> gave
- give --> given
- glabella --> glabellae
- glad --> gladder
- glad --> gladdest
- gladiolus --> gladioli
- glans --> glandes
- glassy --> glassier
- glassy --> glassiest
- glib --> glibber
- glib --> glibbest
- glioma --> gliomata
- glissando --> glissandi
- globefish --> globefishes
- globigerina --> globigerinae
- glochidium --> glochidcia
- glochidium --> glochidia
- glom --> glommed
- glom --> glomming
- glomerulus --> glomeruli
- gloomy --> gloomier
- gloomy --> gloomiest
- glorify --> glorified
- glory --> gloried
- glossa --> glossae
- glossy --> glossier
- glossy --> glossiest
- glottis --> glottides
- glum --> glummer
- glum --> glummest
- glut --> glutted
- glut --> glutting
- glutaeus --> glutaei
- gluteus --> glutei
- gnaw --> gnawn
- gnosis --> gnoses
- go --> goes
- go --> gone
- go --> went
- goatfish --> goatfishes
- gobo --> goboes
- godchild --> godchildren
- godly --> godlier
- godly --> godliest
- goer --> goer
- going-over --> goings-over
- goldfish --> goldfishes
- golly --> gollied
- gomphosis --> gomphoses
- goner --> goner
- gonidium --> gonidia
- gonion --> gonia
- gonococcus --> gonococci
- good --> best
- good well --> better
- goodly --> goodlier
- goodly --> goodliest
- goodwife --> goodwives
- gooey --> gooier
- gooey --> gooiest
- goofy --> goofier
- goofy --> goofiest
- goose --> geese
- goose-step --> goose-stepped
- goose-step --> goose-stepping
- goosefish --> goosefishes
- goosy --> goosier
- goosy --> goosiest
- gorgoneion --> gorgoneia
- gory --> gorier
- gory --> goriest
- gospodin --> gospopoda
- goy --> goyim
- grab --> grabbed
- grab --> grabbing
- gradely --> gradelier
- gradely --> gradeliest
- grader --> grader
- graf --> grafen
- graffito --> graffiti
- grainy --> grainier
- grainy --> grainiest
- grandchild --> grandchildren
- grant-in-aid --> grants-in-aid
- granuloma --> granulomata
- grassy --> grassier
- grassy --> grassiest
- gratify --> gratified
- gravamen --> gravamina
- grave --> graven
- gravel --> gravelled
- gravel --> gravelling
- greasy --> greasier
- greasy --> greasiest
- greedy --> greedier
- greedy --> greediest
- grim --> grimmer
- grim --> grimmest
- grin --> grinned
- grin --> grinning
- grind --> ground
- grip --> gripped
- grip --> gripping
- grip --> gript
- gris-gris --> grig-gris
- grisly --> grislier
- grisly --> grisliest
- grit --> gritted
- grit --> gritting
- gritty --> grittier
- gritty --> grittiest
- grizzly --> grizzlier
- grizzly --> grizzliest
- groggy --> groggier
- groggy --> groggiest
- groovy --> groovier
- groovy --> grooviest
- grosz --> groszy
- grotto --> grottoes
- grotty --> grottier
- grotty --> grottiest
- grounder --> grounder
- grouper --> grouper
- grouty --> groutier
- grouty --> groutiest
- grovel --> grovelled
- grovel --> grovelling
- grow --> grew
- grow --> grown
- grub --> grubbed
- grub --> grubbing
- grubby --> grubbier
- grubby --> grubbiest
- grumpy --> grumpier
- grumpy --> grumpiest
- guaranty --> guarantied
- guest --> guest
- guilde --> guilder
- guilde guilder --> guilders
- guilty --> guiltier
- guilty --> guiltiest
- guitarfish --> guitarfishes
- gully --> gullied
- gum --> gummed
- gum --> gumming
- gumma --> gummata
- gummy --> gummier
- gummy --> gummiest
- gun --> gunned
- gun --> gunning
- gurnar --> gurnard
- gurnar gurnard --> gurnards
- gushy --> gushier
- gushy --> gushiest
- gusty --> gustier
- gusty --> gustiest
- gutsy --> gutsier
- gutsy --> gutsiest
- gutta --> guttae
- gymnasium --> gymnasia
- gynaeceum --> gynaecea
- gynaecium --> gynaecia
- gynecium --> gynecea
- gynecium --> gynecia
- gynoecium --> gynoecea
- gynoecium --> gynoecia
- gyp --> gypped
- gyp --> gypping
- gyrus --> gyri
- hacksaw --> hacksawn
- hadj --> hadjes
- haematolysis --> haematolyses
- haematoma --> haematomata
- haematozoon --> haematozoa
- haemodialysis --> haemodialyses
- haemolysis --> haemolyses
- haemoptysis --> haemoptyses
- haeres --> haeredes
- haftarah --> haftaroth
- hagfish --> hagfishes
- haggada --> haggadoth
- haggada haggadah --> haggadas
- hairy --> hairier
- hairy --> hairiest
- hajj --> hajjes
- haler --> haleru
- half --> halves
- halfway --> halfways
- hallah --> challoth
- hallah --> hallot
- hallah --> halloth
- hallux --> halluces
- halo --> haloes
- halter --> halter
- halter haltere --> halteres
- ham --> hammed
- ham --> hamming
- hammy --> hammier
- hammy --> hammiest
- hamstring --> hamstrung
- hamulus --> hamuli
- hand-knit --> hand-knitted
- hand-knit --> hand-knitting
- handfeed --> handfed
- handicap --> handicapped
- handicap --> handicapping
- handsel --> handselled
- handsel --> handselling
- handy --> handier
- handy --> handiest
- hang --> hung
- hanger-on --> hangers-on
- haphtarah --> haphtaroth
- happy --> happier
- happy --> happiest
- hard --> harder
- hard --> hardest
- hardy --> hardier
- hardy --> hardiest
- haredi --> haredim
- harry --> harried
- haruspex --> haruspices
- hasid --> hasidim
- hassid --> hassidim
- hasty --> hastier
- hasty --> hastiest
- hat --> hatted
- hat --> hatting
- hatchel --> hatchelled
- hatchel --> hatchelling
- haughty --> haughtier
- haughty --> haughtiest
- haustellum --> haustella
- haustorium --> haustoria
- have --> had
- have --> has
- hazy --> hazier
- hazy --> haziest
- hazzan --> hazzanim
- header --> header
- heady --> headier
- heady --> headiest
- healthy --> healthier
- healthy --> healthiest
- hear --> heard
- hearty --> heartier
- hearty --> heartiest
- heave --> hove
- heavy --> heavier
- heavy --> heaviest
- hectocotylus --> hectocotyli
- heder --> hadarim
- hedgehop --> hedgehopped
- hedgehop --> hedgehopping
- hefty --> heftier
- hefty --> heftiest
- heir-at-law --> heirs-at-law
- heldentenor --> heldentenore
- heliozoan --> heliozoa
- helix --> helices
- hem --> hemmed
- hem --> hemming
- hematolysis --> hematolyses
- hematoma --> hematomata
- hematozoon --> hematozoa
- hemelytron --> hemelytra
- hemielytron --> hemielytra
- hemodialysis --> hemodialyses
- hemolysis --> hemolyses
- hemoptysis --> hemoptyses
- hen-and-chickens --> hens-and-chickens
- hendecahedron --> hendecahedra
- hep --> hepper
- hep --> heppest
- heraclid --> heraclidae
- heraklid --> heraklidae
- herbarium --> herbaria
- herby --> herbier
- herby --> herbiest
- herm herma --> hermae
- herma --> hermai
- hernia --> herniae
- hero --> heroes
- herr --> herren
- hetaera --> hetaerae
- hetaira --> hetairai
- hew --> hewn
- hibernaculum --> hibernacula
- hiccup --> hiccupped
- hiccup --> hiccupping
- hide --> hid
- hide --> hidden
- hieracosphinx --> hieracosphinges
- high-hat --> high-hatted
- high-hat --> high-hatting
- hilum --> hila
- hilus --> hili
- himation --> himatia
- hind --> hinder
- hinny --> hinnied
- hip --> hipper
- hip --> hippest
- hippocampus --> hippocampi
- hippopotamus --> hippopotami
- hippy --> hippier
- hippy --> hippiest
- his --> his
- hit --> hitting
- hoary --> hoarier
- hoary --> hoariest
- hob --> hobbed
- hob --> hobbing
- hobnob --> hobnobbed
- hobnob --> hobnobbing
- hobo --> hoboes
- hocus --> hocussed
- hocus --> hocussing
- hocus-pocus --> hocus-pocussed
- hocus-pocus --> hocus-pocussing
- hog --> hogged
- hog --> hogging
- hogfish --> hogfishes
- hogtie --> hogtying
- hold --> held
- holy --> holier
- holy --> holiest
- homely --> homelier
- homely --> homeliest
- homer --> homer
- homey --> homier
- homey --> homiest
- homunculus --> homunculi
- honey --> honied
- honorarium --> honoraria
- hoof --> hooves
- hop --> hopped
- hop --> hopping
- horny --> hornier
- horny --> horniest
- horologium --> horologia
- horrify --> horrified
- horsewhip --> horsewhipped
- horsewhip --> horsewhipping
- horsy --> horsier
- horsy --> horsiest
- hot --> hotter
- hot --> hottest
- housel --> houselled
- housel --> houselling
- housewife --> housewives
- hovel --> hovelled
- hovel --> hovelling
- hug --> hugged
- hug --> hugging
- hum --> hummed
- hum --> humming
- humbug --> humbugged
- humbug --> humbugging
- humerus --> humeri
- humidify --> humidified
- humpy --> humpier
- humpy --> humpiest
- hunger --> hunger
- hungry --> hungrier
- hungry --> hungriest
- hurry --> hurried
- husky --> huskier
- husky --> huskiest
- hydra --> hydrae
- hydromedusa --> hydromedusae
- hydrozoan --> hydrozoa
- hymenium --> hynia
- hymenium --> hyniums
- hymenopteran --> hymenoptera
- hypanthium --> hypanthia
- hyperostosis --> hyperostoses
- hypertrophy --> hypertrophied
- hypha --> hyphae
- hypnosis --> hypnoses
- hypochondrium --> hypochondria
- hypogastrium --> hypogastria
- hypogeum --> hypogea
- hypophysis --> hypophyses
- hypostasis --> hypostases
- hypothalamus --> hypothalami
- hypothesis --> hypotheses
- hyrax --> hyraces
- iamb --> iambi
- ibex --> ibices
- ichthyosaur ichthyosaurus --> ichthyosauruses
- ichthyosaurus --> ichthyosauri
- iconostas iconostasis --> iconostases
- icosahedron --> icosahedra
- icy --> icier
- icy --> iciest
- ideatum --> ideata
- identify --> identified
- igbo --> ibo
- igorrote --> igorrorote
- ilium --> ilia
- imago --> imagines
- imago --> imagoes
- imbed --> imbedded
- imbed --> imbedding
- impanel --> impanelled
- impanel --> impanelling
- impel --> impelled
- impel --> impelling
- imperium --> imperia
- impi --> impies
- imply --> implied
- inbreed --> inbred
- incubus --> incubi
- incur --> incurred
- incur --> incurring
- incus --> incudes
- indemnify --> indemnified
- index --> indices
- indigo --> indigoes
- indumentum --> indumenta
- indusium --> indusia
- indwell --> indwelt
- infer --> inferred
- infer --> inferring
- infundibulum --> infundibula
- ingush --> ingushes
- initial --> initialled
- initial --> initialling
- inky --> inkier
- inky --> inkiest
- inlay --> inlaid
- innuendo --> innuendoes
- inoculum --> inocula
- inquisitor-general --> inquisitors-general
- insectarium --> insectaria
- inset --> insetting
- insider --> insider
- inspan --> inspanned
- inspan --> inspanning
- instal install --> installed
- instal install --> installing
- insula --> insulae
- intaglio --> intagli
- intensify --> intensified
- inter --> interred
- inter --> interring
- interbreed --> interbred
- intercrop --> intercropped
- intercrop --> intercropping
- intercut --> intercutting
- interest --> interest
- interlap --> interlapped
- interlap --> interlapping
- interlay --> interlaid
- interleaf --> interleaves
- intermarry --> intermarried
- intermezzo --> intermezzi
- intermit --> intermitted
- intermit --> intermitting
- interplead --> interpled
- interregnum --> interregna
- interrex --> interreges
- interstratify --> interstratified
- interweave --> interwove
- interweave --> interwoven
- intima --> intimae
- intromit --> intromitted
- intromit --> intromitting
- involucellum --> involucella
- involucre --> involucra
- involucrum --> involucra
- inweave --> inwove
- inweave --> inwoven
- inwrap --> inwrapped
- inwrap --> inwrapping
- iris --> irides
- irs --> irs
- is --> is
- ischium --> ischia
- isthmus --> isthmi
- jab --> jabbed
- jab --> jabbing
- jack-in-the-box --> jacks-in-the-box
- jackaroo jackeroo --> jackeroos
- jackfish --> jackfishes
- jackknife --> jackknives
- jag --> jagged
- jag --> jagging
- jaggy --> jaggier
- jaggy --> jaggiest
- jam --> jammed
- jam --> jamming
- jambeau --> jambeaux
- jammy --> jammier
- jammy --> jammiest
- japan --> japanned
- japan --> japanning
- jar --> jarred
- jar --> jarring
- jaunty --> jauntier
- jaunty --> jauntiest
- jazzy --> jazzier
- jazzy --> jazziest
- jellify --> jellified
- jelly --> jellied
- jellyfish --> jellyfishes
- jemmy --> jemmied
- jerky --> jerkier
- jerky --> jerkiest
- jerry-build --> jerry-built
- jet --> jetted
- jet --> jetting
- jewel --> jewelled
- jewel --> jewelling
- jewelfish --> jewelfishes
- jewfish --> jewfishes
- jib --> jibbed
- jib --> jibbing
- jig --> jigged
- jig --> jigging
- jimmy --> jimmied
- jingo --> jingoes
- jinni --> jinn
- jitterbug --> jitterbugged
- jitterbug --> jitterbugging
- jo joe --> joes
- job --> jobbed
- job --> jobbing
- jog --> jogged
- jog --> jogging
- jog-trot --> jog-trotted
- jog-trot --> jog-trotting
- jointer --> jointer
- jollify --> jollified
- jolly --> jollied
- jolly --> jollier
- jolly --> jolliest
- jot --> jotted
- jot --> jotting
- joy-ride --> joy-ridden
- joy-ride --> joy-rode
- joypop --> joypopped
- joypop --> joypopping
- jug --> jugged
- jug --> jugging
- juicy --> juicier
- juicy --> juiciest
- jumpy --> jumpier
- jumpy --> jumpiest
- jus --> jura
- justify --> justified
- jut --> jutted
- jut --> jutting
- kaddish --> kaddishim
- kalmuc --> kalmuck
- kalmuc kalmuck --> kalmucks
- katabasis --> katabases
- keep --> kept
- keeshond --> keeshonden
- ken --> kenned
- ken --> kenning
- ken --> kent
- kennel --> kennelled
- kennel --> kennelling
- kernel --> kernelled
- kernel --> kernelling
- kibbutz --> kibbutzim
- kid --> kidded
- kid --> kidding
- kidnap --> kidnapped
- kidnap --> kidnapping
- killifish --> killifishes
- kindly --> kindlier
- kindly --> kindliest
- king-of-arms --> kings-of-arms
- kingfish --> kingfishes
- kinky --> kinkier
- kinky --> kinkiest
- kip --> kipped
- kip --> kipping
- knap --> knapped
- knap --> knapping
- kneecap --> kneecapped
- kneecap --> kneecapping
- kneel --> knelt
- knife --> knives
- knit --> knitted
- knit --> knitting
- knob --> knobbed
- knob --> knobbing
- knot --> knotted
- knot --> knotting
- knotty --> knottier
- knotty --> knottiest
- know --> knew
- know --> known
- knurly --> knurlier
- knurly --> knurliest
- ko --> ko'd
- ko --> ko'ing
- ko --> ko's
- kohlrabi --> kohlrabies
- kooky --> kookier
- kooky --> kookiest
- krona --> kronur
- krone --> kronen
- krone --> kroner
- kroon --> krooni
- kylix --> kylikes
- labarum --> labara
- label --> labelled
- label --> labelling
- labellum --> labella
- labium --> labia
- labrum --> labra
- lactobacillus --> lactobacilli
- lacuna --> lacunae
- lacunar --> lacunaria
- lacy --> lacier
- lacy --> laciest
- lade --> laden
- ladify --> ladyfied
- ladify --> ladyfies
- ladify --> ladyfying
- lady-in-waiting --> ladies-in-waiting
- lag --> lagged
- lag --> lagging
- lairy --> lairier
- lairy --> lairiest
- laky --> lakier
- laky --> lakiest
- lallygag --> lallygagged
- lallygag --> lallygagging
- lam --> lammed
- lam --> lamming
- lamella --> lamellae
- lamia --> lamiae
- lamina --> laminae
- lander --> lander
- lanky --> lankier
- lanky --> lankiest
- lap --> lapped
- lap --> lapping
- lapidify --> lapidified
- lapillus --> lapilli
- lapith --> lapithae
- larva --> larvae
- larynx --> larynges
- lasso --> lassoes
- lat --> lati
- lat --> latu
- latex --> latices
- lathy --> lathier
- lathy --> lathiest
- latifundium --> latifundia
- laurel --> laurelled
- laurel --> laurelling
- lavabo --> lavaboes
- lay --> laid
- layer --> layer
- lazy --> lazier
- lazy --> laziest
- lead --> led
- leaf leave --> leaves
- leafy --> leafier
- leafy --> leafiest
- leaky --> leakier
- leaky --> leakiest
- lean --> leant
- leap --> leapt
- leapfrog --> leapfrogged
- leapfrog --> leapfrogging
- learn --> learnt
- leary --> learier
- leary --> leariest
- leave --> left
- lecythus --> lecythi
- leer --> leer
- leery --> leerier
- leery --> leeriest
- left-hander --> left-hander
- left-winger --> left-winger
- leggy --> leggier
- leggy --> leggiest
- lemma --> lemmata
- lemniscus --> lemnisci
- lend --> lent
- lengthy --> lengthier
- lengthy --> lengthiest
- lenis --> lenes
- lentigo --> lentigines
- leonid --> leonides
- lepidopteran --> lepidoptera
- leprosarium --> leprosaria
- leptocephalus --> leptocephali
- lepton --> lepta
- ler --> ler
- let --> letting
- leu --> lei
- leucocytozoan --> leucocytozoa
- lev --> leva
- level --> levelled
- level --> levelling
- leveler --> leveler
- levy --> levied
- lex --> leges
- libel --> libelled
- libel --> libelling
- libra --> librae
- libretto --> libretti
- lie --> lain
- lie --> lay
- lie --> lying
- lied --> lieder
- life --> lives
- light --> lit
- lignify --> lignified
- ligula --> ligulae
- likuta --> makuta
- limbus --> limbi
- limen --> limina
- limes --> limites
- limulus --> limuli
- limy --> limier
- limy --> limiest
- lingo --> lingoes
- lingua --> linguae
- lionfish --> lionfishes
- lip --> lipped
- lip --> lipping
- lipoma --> lipomata
- lippy --> lippier
- lippy --> lippiest
- liquefy --> liquefied
- liquify --> liquified
- lira --> lire
- liriodendron --> liriodendra
- lit litas --> litai
- litas --> litu
- liter --> liter
- lively --> livelier
- lively --> liveliest
- liver --> liver
- lixivium --> lixivia
- loaf --> loaves
- loather --> loather
- lob --> lobbed
- lob --> lobbing
- lobby --> lobbied
- loculus --> loculi
- locus --> loci
- lofty --> loftier
- lofty --> loftiest
- log --> logged
- log --> logging
- loggia --> loggie
- logion --> logia
- logy --> logier
- logy --> logiest
- lomentum --> lomenta
- lonely --> lonelier
- lonely --> loneliest
- loner --> loner
- longobard --> longobardi
- loony --> loonier
- loony --> looniest
- loopy --> loopier
- loopy --> loopiest
- lop --> lopped
- lop --> lopping
- lordly --> lordlier
- lordly --> lordliest
- lorica --> loricae
- lose --> lost
- lot --> lotted
- lot --> lotting
- loti --> maloti
- louse --> lice
- lousy --> lousier
- lousy --> lousiest
- lovely --> lovelier
- lovely --> loveliest
- lowlander --> lowlander
- lowly --> lowlier
- lowly --> lowliest
- luba --> luba
- lubritorium --> lubritoria
- lucky --> luckier
- lucky --> luckiest
- lug --> lugged
- lug --> lugging
- lullaby --> lullabied
- lumbi --> lumbus
- lumen --> lumina
- lumpfish --> lumpfishes
- lumpy --> lumpier
- lumpy --> lumpiest
- lungfish --> lungfishes
- lunula --> lunulae
- luny --> lunier
- luny --> luniest
- lur lure --> lures
- lustre --> lustra
- lusty --> lustier
- lusty --> lustiest
- lying-in --> lyings-in
- lymphangitis --> lymphangitides
- lymphoma --> lymphomata
- lymphopoiesis --> lymphopoieses
- lysis --> lyses
- lytta --> lyttae
- maar --> maare
- macaroni --> macaronies
- maccaroni --> maccaronies
- machine-gun --> machine-gunned
- machine-gun --> machine-gunning
- machzor --> machzorim
- macronucleus --> macronuclei
- macrosporangium --> macrosporangia
- macula --> maculae
- mad --> madded
- mad --> madder
- mad --> maddest
- mad --> madding
- madame --> mesdames
- mademoiselle --> mesdemoiselles
- madrono --> madornos
- maestro --> maestri
- mafioso --> mafiosi
- magma --> magmata
- magnifico --> magnificoes
- magnify --> magnified
- magus --> magi
- mahzor --> mahzorim
- mainer --> mainer
- make --> made
- maligner --> maligner
- malleolus --> malleoli
- malleus --> mallei
- malty --> maltier
- malty --> maltiest
- mamilla --> mamillae
- mamma --> mammae
- mammilla --> mammillae
- man --> manned
- man --> manning
- man --> men
- man-at-arms --> men-at-arms
- man-of-war --> men-o'-war
- man-of-war --> men-of-war
- mandingo --> mandingoes
- mango --> mangoes
- mangy --> mangier
- mangy --> mangiest
- manifesto --> manifestoes
- manky --> mankier
- manky --> mankiest
- manly --> manlier
- manly --> manliest
- manservant --> menservants
- manteau --> manteaux
- mantis --> mantes
- manubrium --> manubria
- manumit --> manumitted
- manumit --> manumitting
- map --> mapped
- map --> mapping
- mar --> marred
- mar --> marring
- marcel --> marcelled
- marcel --> marcelling
- marchesa --> marchese
- marchese --> marchesi
- maremma --> maremme
- mariner --> mariner
- markka --> markkaa
- marry --> married
- marshal --> marshalled
- marshal --> marshalling
- marshy --> marshier
- marshy --> marshiest
- marsupium --> marsupia
- marvel --> marvelled
- marvel --> marvelling
- marvel-of-peru --> marvels-of-peru
- mass masse --> masses
- massy --> massier
- massy --> massiest
- master-at-arms --> masters-at-arms
- mat --> matted
- mat --> matting
- matrix --> matrices
- matter --> matter
- matzo --> matzoth
- maungy --> maungier
- maungy --> maungiest
- mausoleum --> mausolea
- maxilla --> maxillae
- maximum --> maxima
- may --> might
- mazy --> mazier
- mazy --> maziest
- mealy --> mealier
- mealy --> mealiest
- mean --> meant
- measly --> measlier
- measly --> measliest
- meaty --> meatier
- meaty --> meatiest
- medal --> medalled
- medal --> medalling
- media --> mediae
- mediastinum --> mediastina
- medium --> media
- medulla --> medullae
- medusa --> medusae
- meet --> met
- meeter --> meeter
- megaron --> megara
- megasporangium --> megasporangia
- megillah --> megilloth
- meiosis --> meioses
- melanoma --> melanomata
- melisma --> melismata
- melt --> molten
- memento --> mementoes
- memorandum --> memoranda
- meniscus --> menisci
- menstruum --> menstrua
- merry --> merrier
- merry --> merriest
- mesenteron --> mesentera
- mesothorax --> mesothoraces
- messy --> messier
- messy --> messiest
- mestizo --> mestizoes
- metacarpus --> metacarpi
- metal --> metalled
- metal --> metalling
- metamorphosis --> metamorphoses
- metanephros --> metanephroi
- metastasis --> metastases
- metatarsus --> metatarsi
- metathesis --> metatheses
- metathorax --> metathoraces
- metazoan --> metazoa
- metempsychosis --> metempsychoses
- metencephalon --> metencephala
- metrify --> metrified
- mezuzah --> mezuzoth
- miasma --> miasmata
- microanalysis --> microanalyses
- micrococcus --> micrococci
- micronucleus --> micronuclei
- microsporangium --> microsporangia
- midrash --> midrashim
- midwife --> midwives
- miffy --> miffier
- miffy --> miffiest
- mighty --> mightier
- mighty --> mightiest
- milcher --> milcher
- milieu --> milieux
- milium --> milia
- milker --> milker
- milkfish --> milkfishes
- milky --> milkier
- milky --> milkiest
- millennium --> millennia
- mimic --> mimicked
- mimic --> mimicking
- mina --> minae
- mingy --> mingier
- mingy --> mingiest
- minify --> minified
- minimum --> minima
- ministerium --> ministeria
- minter --> minter
- minutia --> minutiae
- minyan --> minyanim
- miosis --> mioses
- mir --> miri
- miracidium --> miracidia
- mirky --> mirkier
- mirky --> mirkiest
- misapply --> misapplied
- misbecome --> misbecame
- miscarry --> miscarried
- misdeal --> misdealt
- miser --> miser
- misfit --> misfitted
- misfit --> misfitting
- misgive --> misgave
- misgive --> misgiven
- mishit --> mishitting
- mishna mishnah --> mishnayoth
- mislay --> mislaid
- mislead --> misled
- misplead --> mispled
- misspell --> misspelt
- misspend --> misspent
- mistake --> mistaken
- mistake --> mistook
- misty --> mistier
- misty --> mistiest
- misunderstand --> misunderstood
- mitochondrion --> mitochondria
- mitzvah --> mitzvoth
- mob --> mobbed
- mob --> mobbing
- mocker --> mocker
- model --> modelled
- model --> modelling
- modeler --> modeler
- modest --> modest
- modify --> modified
- modiolus --> modioli
- modulus --> moduli
- moldy --> moldier
- moldy --> moldiest
- mollify --> mollified
- momentum --> momenta
- momus --> momi
- monad monas --> monades
- monkfish --> monkfishes
- monochasium --> monochasia
- monopodium --> monopodia
- monopteron --> monoptera
- monopteros --> monopteroi
- monseigneur --> messeigneurs
- monsieur --> messieurs
- monsignor --> monsignori
- mont-de-piete --> monts-de-piete
- moody --> moodier
- moody --> moodiest
- mooncalf --> mooncalves
- moonfish --> moonfishes
- moony --> moonier
- moony --> mooniest
- mop --> mopped
- mop --> mopping
- mora --> morae
- moratorium --> moratoria
- morceau --> morceaux
- moresco --> morescoes
- morisco --> moriscoes
- morphallaxis --> morphallaxes
- morphosis --> morphoses
- mortify --> mortified
- morula --> morulae
- mosasaurus --> mosasauri
- moshav --> moshavim
- moslem --> moslim
- moslem --> moslims
- mosquito --> mosquitoes
- mother-in-law --> mothers-in-law
- mothy --> mothier
- mothy --> mothiest
- motto --> mottoes
- mouldy --> mouldier
- mouldy --> mouldiest
- mouse --> mice
- mousy --> mousier
- mousy --> mousiest
- mouthy --> mouthier
- mouthy --> mouthiest
- mow --> mown
- mucky --> muckier
- mucky --> muckiest
- mucosa --> mucosae
- mucro --> mucrones
- mud --> mudded
- mud --> mudding
- muddy --> muddied
- muddy --> muddier
- muddy --> muddiest
- mudejar --> mudejares
- mudfish --> mudfishes
- mug --> mugged
- mug --> mugging
- muggy --> muggier
- muggy --> muggiest
- mulatto --> mulattoes
- multipara --> multiparae
- multiplexer --> multiplexer
- multiply --> multiplied
- mum --> mummed
- mum --> mumming
- mummify --> mummified
- murex --> murices
- murky --> murkier
- murky --> murkiest
- mushy --> mushier
- mushy --> mushiest
- muskellunge --> muskallunge
- musky --> muskier
- musky --> muskiest
- muster --> muster
- musty --> mustier
- musty --> mustiest
- mutiny --> mutinied
- muzzy --> muzzier
- muzzy --> muzziest
- mycelium --> mycelia
- mycetoma --> mycetomata
- mycobacterium --> mycobacteria
- mycorrhiza --> mycorrhizae
- myelencephalon --> myelencephala
- myiasis --> myiases
- myocardium --> myocardia
- myofibrilla --> myofibrillae
- myoma --> myomata
- myosis --> myoses
- myrmidon --> myrmidones
- mystify --> mystified
- mythos --> mythoi
- myxoma --> myxomata
- nab --> nabbed
- nab --> nabbing
- naevus --> naevi
- nag --> nagged
- nag --> nagging
- naiad --> naiades
- naos --> naoi
- nap --> napped
- nap --> napping
- nappy --> nappier
- nappy --> nappiest
- narcissus --> narcissi
- naris --> nares
- nasopharynx --> nasopharynges
- nasty --> nastier
- nasty --> nastiest
- natatorium --> natatoria
- natty --> nattier
- natty --> nattiest
- naughty --> naughtier
- naughty --> naughtiest
- naumachia --> naumachiae
- nauplius --> nauplii
- nautilus --> nautili
- navaho --> navahoes
- navajo --> navajoes
- nebula --> nebulae
- necropolis --> necropoleis
- needlefish --> needlefishes
- needy --> needier
- needy --> neediest
- negrillo --> negrilloes
- negrito --> negritoes
- negro --> negroes
- nemesis --> nemeses
- nephridium --> nephridia
- nereid --> nereides
- nervy --> nervier
- nervy --> nerviest
- net --> netted
- net --> netting
- neurohypophysis --> neurohypophyses
- neuroma --> neuromata
- neuropteron --> neuroptera
- neurosis --> neuroses
- nevus --> nevi
- newsy --> newsier
- newsy --> newsiest
- nib --> nibbed
- nib --> nibbing
- nibelung --> nibelungen
- nickel --> nickelled
- nickel --> nickelling
- nid-nod --> nid-nodded
- nid-nod --> nid-nodding
- nidify --> nidified
- nidus --> nidi
- niello --> nielli
- nifty --> niftier
- nifty --> niftiest
- nigrify --> nigrified
- nilgai --> nilgai
- nimbostratus --> nimbostrati
- nimbus --> nimbi
- nip --> nipped
- nip --> nipping
- nippy --> nippier
- nippy --> nippiest
- nitrify --> nitrified
- nitty --> nittier
- nitty --> nittiest
- no --> noes
- noctiluca --> noctilucae
- nod --> nodded
- nod --> nodding
- nodus --> nodi
- noisy --> noisier
- noisy --> noisiest
- nomen --> nomina
- non-pros --> non-prossed
- non-pros --> non-prosses
- non-pros --> non-prossing
- nonplus --> nonplussed
- nonplus --> nonplusses
- nonplus --> nonplussing
- northeasterner --> northeasterner
- norther --> norther
- northerner --> northerner
- nosy --> nosier
- nosy --> nosiest
- notify --> notified
- notum --> nota
- noumenon --> noumena
- nova --> novae
- novella --> novelle
- novena --> novenae
- nubecula --> nubeculae
- nucellus --> nucelli
- nucha --> nuchae
- nucleolus --> nucleoli
- nucleus --> nuclei
- nullify --> nullified
- nullipara --> nulliparae
- number --> number
- numbfish --> numbfishes
- numen --> numina
- nut --> nutted
- nut --> nutting
- nutty --> nuttier
- nutty --> nuttiest
- nympha --> nymphae
- oarfish --> oarfishes
- oasis --> oases
- obelus --> obeli
- objectify --> objectified
- obligato --> obligati
- obolus --> oboli
- occiput --> occipita
- occupy --> occupied
- occur --> occurred
- occur --> occurring
- oceanarium --> oceanaria
- oceanid --> oceanides
- ocellus --> ocelli
- ochrea --> ochreae
- ochrea ocrea --> ocreae
- octahedron --> octahedra
- octopus --> octopi
- oculus --> oculi
- odeum --> odea
- off --> offer
- offer --> offer
- offset --> offsetting
- oily --> oilier
- oily --> oiliest
- old-timer --> old-timer
- oldwife --> oldwives
- oleum --> olea
- oliver --> oliver
- omasum --> omasa
- omayyad --> omayyades
- omentum --> omenta
- omit --> omitted
- omit --> omitting
- ommatidium --> ommatidia
- ommiad --> ommiades
- onager --> onagri
- oogonium --> oogonia
- ootheca --> oothecae
- oozy --> oozier
- oozy --> ooziest
- opener --> opener
- operculum --> opercula
- optimum --> optima
- organa organum --> organums
- organon organum --> organa
- orthopteron --> orthoptera
- os --> ora
- os --> osar
- os --> ossa
- osculum --> oscula
- ossify --> ossified
- osteoma --> osteomata
- ostium --> ostia
- othman ottoman --> ottomans
- outbid --> outbidden
- outbid --> outbidding
- outbreed --> outbred
- outcrop --> outcropped
- outcrop --> outcropping
- outcry --> outcried
- outdo --> outdid
- outdo --> outdone
- outdraw --> outdrawn
- outdraw --> outdrew
- outfight --> outfought
- outfit --> outfitted
- outfit --> outfitting
- outgas --> outgassed
- outgas --> outgasses
- outgas --> outgassing
- outgeneral --> outgeneralled
- outgeneral --> outgeneralling
- outgo --> outgone
- outgo --> outwent
- outgrow --> outgrew
- outgrow --> outgrown
- outlay --> outlaid
- outman --> outmanned
- outman --> outmanning
- output --> outputted
- output --> outputting
- outride --> outridden
- outride --> outrode
- outrun --> outran
- outrun --> outrunning
- outsell --> outsold
- outshine --> outshone
- outshoot --> outshot
- outsider --> outsider
- outspan --> outspanned
- outspan --> outspanning
- outstand --> outstood
- outstrip --> outstripped
- outstrip --> outstripping
- outthink --> outthought
- outwear --> outwore
- outwear --> outworn
- outwit --> outwitted
- outwit --> outwitting
- overbear --> overbore
- overbear --> overborne
- overbid --> overbidden
- overbid --> overbidding
- overblow --> overblew
- overblow --> overblown
- overbuild --> overbuilt
- overcome --> overcame
- overcomer --> overcomer
- overcrop --> overcropped
- overcrop --> overcropping
- overdo --> overdid
- overdo --> overdone
- overdraw --> overdrawn
- overdraw --> overdrew
- overdrive --> overdriven
- overdrive --> overdrove
- overflow overfly --> overflown
- overfly --> overflew
- overgrow --> overgrew
- overgrow --> overgrown
- overhang --> overhung
- overhear --> overheard
- overlap --> overlapped
- overlap --> overlapping
- overlay --> overlaid
- overlie --> overlain
- overlie --> overlay
- overlie --> overlying
- overman --> overmanned
- overman --> overmanning
- overnighter --> overnighter
- overpass --> overpast
- overpay --> overpaid
- override --> overridden
- override --> overrode
- overrun --> overran
- overrun --> overrunning
- oversee --> oversaw
- oversee --> overseen
- oversell --> oversold
- overset --> oversetting
- oversew --> oversewn
- overshoot --> overshot
- oversimplify --> oversimplified
- oversleep --> overslept
- overspend --> overspent
- overspill --> overspilt
- overstep --> overstepped
- overstep --> overstepping
- overtake --> overtaken
- overtake --> overtook
- overthrow --> overthrew
- overthrow --> overthrown
- overtop --> overtopped
- overtop --> overtopping
- overwind --> overwound
- overwrite --> overwritten
- overwrite --> overwrote
- ovolo --> ovoli
- ovotestis --> ovotestes
- ovum --> ova
- owner --> owner
- ox --> oxen
- oxymoron --> oxymora
- pacify --> pacified
- pad --> padded
- pad --> padding
- paddlefish --> paddlefishes
- paisa --> paise
- pal --> palled
- pal --> palling
- palea --> paleae
- palestra --> palestrae
- palingenesis --> palingeneses
- pallium --> pallia
- pally --> pallier
- pally --> palliest
- palmetto --> palmettoes
- palmy --> palmier
- palmy --> palmiest
- palpus --> palpi
- palsy --> palsied
- paltry --> paltrier
- paltry --> paltriest
- pan --> panned
- pan --> panning
- pancratium --> pancratia
- pandy --> pandied
- panel --> panelled
- panel --> panelling
- panettone --> panettoni
- panic --> panicked
- panic --> panicking
- paparazzo --> paparazzi
- paperknife --> paperknives
- papilla --> papillae
- papilloma --> papillomata
- pappus --> pappi
- pappy --> pappier
- pappy --> pappiest
- papula --> papulae
- papyrus --> papyri
- parabasis --> parabases
- paraleipsis paralipsis --> paraleipses
- parallel --> parallelled
- parallel --> parallelling
- paralysis --> paralyses
- paramecium --> paramecia
- parament --> paramenta
- paraphysis --> paraphyses
- parapodium --> parapodia
- parapraxis --> parapraxes
- paraselene --> paraselenae
- parashah --> parashoth
- parasyntheton --> parasyntheta
- parazoan --> parazoa
- parcel --> parcelled
- parcel --> parcelling
- parenthesis --> parentheses
- parergon --> parerga
- parhelion --> parhelia
- pari-mutuel --> paris-mutuels
- paries --> parietes
- parky --> parkier
- parky --> parkiest
- parody --> parodied
- parrotfish --> parrotfishes
- parry --> parried
- part-timer --> part-timer
- partake --> partaken
- partake --> partook
- parulis --> parulides
- pasquinade --> pasquil
- pasquinade --> pasquilled
- pasquinade --> pasquilling
- pasquinade --> pasquils
- passer --> passer
- passer-by --> passers-by
- paster --> paster
- pastorale --> pastorali
- pasty --> pastier
- pasty --> pastiest
- pat --> patted
- pat --> patting
- patagium --> patagia
- patchy --> patchier
- patchy --> patchiest
- patella --> patellae
- pater --> pater
- paterfamilias --> patresfamilias
- patina --> patinae
- patrol --> patrolled
- patrol --> patrolling
- pawky --> pawkier
- pawky --> pawkiest
- pay --> paid
- pea --> pease
- peachy --> peachier
- peachy --> peachiest
- pearler --> pearler
- pearly --> pearlier
- pearly --> pearliest
- peccadillo --> peccadilloes
- pecten --> pectines
- pedal --> pedalled
- pedal --> pedalling
- pedaler --> pedaler
- pedalo --> pedaloes
- peg --> pegged
- peg --> pegging
- pekinese --> pekingese
- pelvis --> pelves
- pen --> penned
- pen --> penning
- pen --> pent
- pencil --> pencilled
- pencil --> pencilling
- penetralia --> penetralium
- penicillium --> penicillia
- penis --> penes
- penknife --> penknives
- penna --> pennae
- penni --> pennia
- penny --> pence
- pentahedron --> pentahedra
- pentimento --> pentimenti
- penumbra --> penumbrae
- pep --> pepped
- pep --> pepping
- peplum --> pepla
- peppy --> peppier
- peppy --> peppiest
- pericardium --> pericardia
- perichondrium --> perichondria
- pericranium --> pericrania
- peridium --> peridia
- perigonium --> perigonia
- perihelion --> perihelia
- perinephrium --> perinephria
- perineum --> perinea
- perionychium --> perionychia
- periosteum --> periostea
- periphrasis --> periphrases
- peristalsis --> peristalses
- perithecium --> perithecia
- peritoneum --> peritonea
- perky --> perkier
- perky --> perkiest
- permit --> permitted
- permit --> permitting
- persona --> personae
- personify --> personified
- pes --> pedes
- pesky --> peskier
- pesky --> peskiest
- pet --> petted
- pet --> petting
- petechia --> petechiae
- peter --> peter
- petrify --> petrified
- pettifog --> pettifogged
- pettifog --> pettifogging
- petty --> pettier
- petty --> pettiest
- pfennig --> pfennige
- phalange phalanx --> phalanges
- phallus --> phalli
- phantasy --> phantasied
- pharynx --> pharynges
- phenomenon --> phenomena
- phi-phenomenon --> phi-phenomena
- philodendron --> philodendra
- phlyctaena phlyctena --> phlyctenae
- phony --> phonier
- phony --> phoniest
- photocopy --> photocopied
- photomap --> photomapped
- photomap --> photomapping
- photoset --> photosetting
- phyle --> phylae
- phyllotaxis --> phyllotaxes
- phylloxera --> phylloxerae
- phylogenesis --> phylogeneses
- phylum --> phyla
- physic --> physicked
- physic --> physicking
- picky --> pickier
- picky --> pickiest
- picnic --> picnicked
- picnic --> picnicking
- pied-a-terre --> pieds-a-terre
- pig --> pigged
- pig --> pigging
- pigfish --> pigfishes
- piggy --> piggier
- piggy --> piggiest
- pileum --> pilea
- pileus --> pilei
- pillory --> pilloried
- pin --> pinned
- pin --> pinning
- pinch-hit --> pinch-hitting
- pinetum --> pineta
- pinfish --> pinfishes
- pinko --> pinkoes
- pinna --> pinnae
- pinnula --> pinnulae
- piny --> pinier
- piny --> piniest
- pip --> pipped
- pip --> pipping
- pipefish --> pipefishes
- pirog --> pirogi
- piscina --> piscinae
- pistol --> pistolled
- pistol --> pistolling
- pistol-whip --> pistol-whipped
- pistol-whip --> pistol-whipping
- pit --> pitted
- pit --> pitting
- pitapat --> pitapatted
- pitapat --> pitapatting
- pitchy --> pitchier
- pitchy --> pitchiest
- pithecanthropus --> pithecanthropi
- pithos --> pithoi
- pithy --> pithier
- pithy --> pithiest
- pity --> pitied
- placebo --> placeboes
- placenta --> placentae
- plan --> planned
- plan --> planning
- planer --> planer
- planetarium --> planetaria
- planula --> planulae
- plashy --> plashier
- plashy --> plashiest
- plasmodesma --> plasmodesmata
- plasmodium --> plasmodia
- plat --> platted
- plat --> platting
- plateau --> plateaux
- platy --> platier
- platy --> platiest
- player --> player
- plead --> pled
- plectron plectrum --> plectra
- plenum --> plena
- pleura --> pleurae
- pleuron --> pleura
- plica --> plicae
- plod --> plodded
- plod --> plodding
- plop --> plopped
- plop --> plopping
- plot --> plotted
- plot --> plotting
- ploughman plowman --> ploughmen
- plucky --> pluckier
- plucky --> pluckiest
- plug --> plugged
- plug --> plugging
- plumber --> plumber
- plummy --> plummier
- plummy --> plummiest
- plumy --> plumier
- plumy --> plumiest
- ply --> plied
- pneumobacillus --> pneumobacilli
- pneumococcus --> pneumococci
- pocketknife --> pocketknives
- pod --> podded
- pod --> podding
- podetium --> podetia
- podgy --> podgier
- podgy --> podgiest
- podium --> podia
- poky --> pokier
- poky --> pokiest
- polis --> poleis
- polisher --> polisher
- pollex --> pollices
- pollinium --> pollinia
- polychasium --> polychasia
- polyhedron --> polyhedra
- polyparium --> polyparia
- polypus --> polypi
- polyzoan --> polyzoa
- polyzoarium --> polyzoaria
- pommel --> pommelled
- pommel --> pommelling
- pons --> pontes
- pontifex --> pontifices
- pop --> popped
- pop --> popping
- popes --> popes
- porky --> porkier
- porky --> porkiest
- portamento --> portamenti
- porter --> porter
- portico --> porticoes
- portly --> portlier
- portly --> portliest
- portmanteau --> portmanteaux
- poster --> poster
- postliminium --> postliminia
- pot --> potted
- pot --> potting
- potato --> potatoes
- potty --> pottier
- potty --> pottiest
- praenomen --> praenomina
- praxis --> praxes
- preachify --> preachified
- preachy --> preachier
- preachy --> preachiest
- precancel --> precancelled
- precancel --> precancelling
- predella --> predelle
- prefer --> preferred
- prefer --> preferring
- premaxilla --> premaxillae
- prenomen --> prenomina
- preoccupy --> preoccupied
- prepay --> prepaid
- presa --> prese
- presenter --> presenter
- presignify --> presignified
- pretender --> pretender
- pretermit --> pretermitted
- pretermit --> pretermitting
- prettify --> prettified
- pretty --> prettied
- pretty --> prettier
- pretty --> prettiest
- prickly --> pricklier
- prickly --> prickliest
- pricy --> pricier
- pricy --> priciest
- priestly --> priestlier
- priestly --> priestliest
- prig --> prigged
- prig --> prigging
- prim --> primmed
- prim --> primmer
- prim --> primmest
- prim --> primming
- primer --> primer
- primigravida --> primigravidae
- primipara --> primiparae
- primo --> primi
- primordium --> primordia
- princely --> princelier
- princely --> princeliest
- principium --> principia
- printer --> printer
- prissy --> prissier
- prissy --> prissiest
- privateer --> privateer
- privy --> privier
- privy --> priviest
- proboscis --> proboscides
- proces-verbal --> proces-verbaux
- prod --> prodded
- prod --> prodding
- proglottid proglottis --> proglottides
- prognosis --> prognoses
- program --> programmed
- program --> programmes
- program --> programming
- prolegomenon --> prolegomena
- prolepsis --> prolepses
- prologue --> prologed
- prologue --> prologing
- prologue --> prologs
- prompter --> prompter
- promycelium --> promycelia
- pronephros --> pronephra
- pronephros --> pronephroi
- pronucleus --> pronuclei
- prop --> propped
- prop --> propping
- propel --> propelled
- propel --> propelling
- prophesy --> prophesied
- propositus --> propositi
- proptosis --> proptoses
- propylaeum --> propylaea
- propylon --> propyla
- proscenium --> proscenia
- prosencephalon --> prosencephala
- prosthesis --> prostheses
- prostomium --> prostomia
- prosy --> prosier
- prosy --> prosiest
- protasis --> protases
- prothalamion prothalamium --> prothalamia
- prothallium --> prothallia
- prothallus --> prothalli
- prothorax --> prothoraces
- protonema --> protonemata
- protozoan --> protozoa
- prove --> proven
- proventriculus --> proventriculi
- proviso --> provisoes
- pry --> pried
- prytaneum --> prytanea
- psalterium --> psalteria
- pseudopodium --> pseudopodia
- psychoneurosis --> psychoneuroses
- psychosis --> psychoses
- pterygium --> pterygia
- pteryla --> pterylae
- ptosis --> ptoses
- pub --> pubbed
- pub --> pubbing
- pubis --> pubes
- pudendum --> pudenda
- pudgy --> pudgier
- pudgy --> pudgiest
- puffer --> puffer
- puffy --> puffier
- puffy --> puffiest
- pug --> pugged
- pug --> pugging
- pul --> puli
- pulpy --> pulpier
- pulpy --> pulpiest
- pulvillus --> pulvilli
- pulvinus --> pulvini
- pummel --> pummelled
- pummel --> pummelling
- pun --> punned
- pun --> punning
- punchinello --> punchinelloes
- punchy --> punchier
- punchy --> punchiest
- puny --> punier
- puny --> puniest
- pup --> pupped
- pup --> pupping
- pupa --> pupae
- puparium --> puparia
- purify --> purified
- pushy --> pushier
- pushy --> pushiest
- pussy --> pussier
- pussy --> pussiest
- put --> putting
- put-put --> put-putted
- put-put --> put-putting
- putamen --> putamina
- putrefy --> putrefied
- putto --> putti
- putty --> puttied
- pycnidium --> pycnidia
- pygidium --> pygidia
- pylorus --> pylori
- pyxidium --> pyxidia
- pyxis --> pyxides
- qaddish --> qaddishim
- quadrennium --> quadrennia
- quadriga --> quadrigae
- quaggy --> quaggier
- quaggy --> quaggiest
- quaky --> quakier
- quaky --> quakiest
- quale --> qualia
- qualify --> qualified
- quantify --> quantified
- quantum --> quanta
- quarrel --> quarrelled
- quarrel --> quarrelling
- quarry --> quarried
- quartersaw --> quartersawn
- quarterstaff --> quarterstaves
- queasy --> queasier
- queasy --> queasiest
- queenly --> queenlier
- queenly --> queenliest
- query --> queried
- quezal --> quezales
- quick-freeze --> quick-froze
- quick-freeze --> quick-frozen
- quickstep --> quickstepped
- quickstep --> quickstepping
- quinquennium --> quinquennia
- quip --> quipped
- quip --> quipping
- quit --> quitted
- quit --> quitting
- quiz --> quizzed
- quiz --> quizzes
- quiz --> quizzes
- quiz --> quizzing
- rabato rebato --> rabatos
- rabbitfish --> rabbitfishes
- rachis rhachis --> rhachises
- racy --> racier
- racy --> raciest
- radius --> radii
- radix --> radices
- radula --> radulae
- rag --> ragged
- rag --> ragging
- rainy --> rainier
- rainy --> rainiest
- rally --> rallied
- ram --> rammed
- ram --> ramming
- ramentum --> ramenta
- ramify --> ramified
- ramus --> rami
- randy --> randier
- randy --> randiest
- rangy --> rangier
- rangy --> rangiest
- ranker --> ranker
- ranula --> ranulae
- ranunculus --> ranunculi
- rap --> rapped
- rap --> rapping
- raphe --> raphae
- raphide raphis --> raphides
- rappel --> rappelled
- rappel --> rappelling
- rarefy --> rarefied
- rat --> ratted
- rat --> ratting
- ratfish --> ratfishes
- ratify --> ratified
- rattly --> rattlier
- rattly --> rattliest
- ratty --> rattier
- ratty --> rattiest
- raunchy --> raunchier
- raunchy --> raunchiest
- ravel --> ravelled
- ravel --> ravelling
- razor-cut --> razor-cutting
- re-tread --> re-trod
- re-tread --> re-trodden
- ready --> readier
- ready --> readiest
- real --> reales
- real --> reis
- rearmouse --> rearmice
- rearmouse reremouse --> reremice
- reave --> reft
- rebel --> rebelled
- rebel --> rebelling
- rebuild --> rebuilt
- rebut --> rebutted
- rebut --> rebutting
- recap --> recapped
- recap --> recapping
- reclassify --> reclassified
- recommit --> recommitted
- recommit --> recommitting
- recopy --> recopied
- recorder --> recorder
- rectify --> rectified
- rectrix --> rectrices
- rectum --> recta
- rectus --> recti
- recur --> recurred
- recur --> recurring
- red --> red
- red --> redder
- red --> reddest
- red redd --> redded
- red redd --> redding
- red-pencil --> red-pencilled
- red-pencil --> red-pencilling
- redfish --> redfishes
- redia --> rediae
- redo --> redid
- redo --> redone
- reedy --> reedier
- reedy --> reediest
- reeve --> rove
- refer --> referred
- refer --> referring
- referendum --> referenda
- refit --> refitted
- refit --> refitting
- refuel --> refuelled
- refuel --> refuelling
- refugium --> refugia
- regret --> regretted
- regret --> regretting
- regulus --> reguli
- rehear --> reheard
- reify --> reified
- relatum --> relata
- rely --> relied
- remake --> remade
- remarry --> remarried
- remex --> remiges
- remit --> remitted
- remit --> remitting
- rend --> rent
- renter --> renter
- repay --> repaid
- repel --> repelled
- repel --> repelling
- replevy --> replevied
- reply --> replied
- repot --> repotted
- repot --> repotting
- rerun --> reran
- rerun --> rerunning
- reseau --> reseaux
- reset --> resetting
- resew --> resewn
- residuum --> residua
- resit --> resat
- resit --> resitting
- responsum --> responsa
- ret --> retted
- ret --> retting
- retailer --> retailer
- retake --> retaken
- retake --> retook
- rete --> retia
- retell --> retold
- rethink --> rethought
- retiarius --> retiarii
- reticulum --> reticula
- retina --> retinae
- retinaculum --> retinacula
- retransmit --> retransmitted
- retransmit --> retransmitting
- retrofit --> retrofitted
- retrofit --> retrofitting
- retry --> retried
- reunify --> reunified
- rev --> revved
- rev --> revving
- revel --> revelled
- revel --> revelling
- revet --> revetted
- revet --> revetting
- revivify --> revivified
- rewind --> rewound
- rewrite --> rewritten
- rewrite --> rewrote
- rhabdomyoma --> rhabdomyomata
- rhachis --> rachides
- rhachis --> rhachides
- rhinencephalon --> rhinencephala
- rhizobium --> rhizobia
- rhombus --> rhombi
- rhonchus --> rhonchi
- rhyton --> rhyta
- rib --> ribbed
- rib --> ribbing
- ribbonfish --> ribbonfishes
- ricercare --> ricercacari
- ricercare --> ricercari
- rickettsia --> rickettsiae
- ricochet --> ricochetted
- ricochet --> ricochetting
- rid --> ridded
- rid --> ridding
- ride --> ridden
- ride --> rode
- rig --> rigged
- rig --> rigging
- right-hander --> right-hander
- right-winger --> right-winger
- rigidify --> rigidified
- rilievo --> rilievi
- rim --> rimmed
- rim --> rimming
- rima --> rimae
- rimy --> rimier
- rimy --> rimiest
- ring --> rang
- ring --> rung
- rip --> ripped
- rip --> ripping
- rise --> risen
- rise --> rose
- risky --> riskier
- risky --> riskiest
- ritzy --> ritzier
- ritzy --> ritziest
- rival --> rivalled
- rival --> rivalling
- rive --> riven
- roaster --> roaster
- rob --> robbed
- rob --> robbing
- robe-de-chambre --> robes-de-chambre
- rockfish --> rockfishes
- rocky --> rockier
- rocky --> rockiest
- roily --> roilier
- roily --> roiliest
- rom --> roma
- roman-fleuve --> romans-fleuves
- rondeau --> rondeaux
- rooky --> rookier
- rooky --> rookiest
- roomy --> roomier
- roomy --> roomiest
- ropy --> ropier
- ropy --> ropiest
- rosarium --> rosaria
- rosefish --> rosefishes
- rostellum --> rostella
- rostrum --> rostra
- rosy --> rosier
- rosy --> rosiest
- rot --> rotted
- rot --> rotting
- rotl --> artal
- rotl --> artel
- rough-dry --> rough-dried
- rough-hew --> rough-hewn
- rouleau --> rouleaux
- rowdy --> rowdier
- rowdy --> rowdiest
- rowel --> rowelled
- rowel --> rowelling
- rub --> rubbed
- rub --> rubbing
- ruddy --> ruddier
- ruddy --> ruddiest
- ruga --> rugae
- rumen --> rumina
- run --> ran
- run --> running
- runner-up --> runners-up
- runny --> runnier
- runny --> runniest
- rusher --> rusher
- rushy --> rushier
- rushy --> rushiest
- rusty --> rustier
- rusty --> rustiest
- rut --> rutted
- rut --> rutting
- rutty --> ruttier
- rutty --> ruttiest
- saccharify --> saccharified
- sacrarium --> sacraria
- sacrum --> sacra
- sad --> sadder
- sad --> saddest
- sag --> sagged
- sag --> sagging
- saguaro sahuaro --> saguaros
- sailfish --> sailfishes
- salary --> salaried
- salesperson --> salespeople
- salify --> salified
- sally --> sallied
- salmonella --> salmonellae
- salpa --> salpae
- salpinx --> salpinges
- saltarello --> saltarelli
- salter --> salter
- salty --> saltier
- salty --> saltiest
- salvo --> salvoes
- sampler --> sampler
- sanctify --> sanctified
- sanctum --> sancta
- sandbag --> sandbagged
- sandbag --> sandbagging
- sandy --> sandier
- sandy --> sandiest
- sanitarium --> sanitaria
- santims --> santimi
- sap --> sapped
- sap --> sapping
- saphena --> saphenae
- saponify --> saponified
- sappy --> sappier
- sappy --> sappiest
- sarcophagus --> sarcophagi
- sartorius --> sartorii
- sassanid --> sassanidae
- sassy --> sassier
- sassy --> sassiest
- satisfy --> satisfied
- saucy --> saucier
- saucy --> sauciest
- savvy --> savvied
- savvy --> savvier
- savvy --> savviest
- saw --> sawn
- sawfish --> sawfishes
- say --> said
- scabby --> scabbier
- scabby --> scabbiest
- scag --> scagged
- scag --> scagging
- scaldfish --> scaldfishes
- scalenus --> scaleni
- scaly --> scalier
- scaly --> scaliest
- scan --> scanned
- scan --> scanning
- scanty --> scantier
- scanty --> scantiest
- scapula --> scapulae
- scar --> scarred
- scar --> scarring
- scarabaeus --> scarabaei
- scarf --> scarves
- scarify --> scarified
- scary --> scarier
- scary --> scariest
- scat --> scatted
- scat --> scatting
- schatchen shadchan --> schatchonim
- schatchen shadchan --> shadchans
- schema --> schemata
- scherzando --> scherzandi
- scherzo --> scherzi
- schmo --> schmoes
- scholium --> scholia
- schul --> schuln
- schutzstaffel --> schutzstaffeln
- scirrhus --> scirrhi
- scleroma --> scleromata
- sclerosis --> scleroses
- sclerotium --> sclerotia
- scolex --> scoleces
- scolex --> scolices
- scopula --> scopulae
- scoria --> scoriae
- scorify --> scorified
- scotoma --> scotomata
- scrag --> scragged
- scrag --> scragging
- scraggly --> scragglier
- scraggly --> scraggliest
- scraggy --> scraggier
- scraggy --> scraggiest
- scram --> scrammed
- scram --> scramming
- scrap --> scrapped
- scrap --> scrapping
- scraper --> scraper
- scrappy --> scrappier
- scrappy --> scrappiest
- scrawny --> scrawnier
- scrawny --> scrawniest
- screwy --> screwier
- screwy --> screwiest
- scriptorium --> scriptoria
- scrotum --> scrota
- scrub --> scrubbed
- scrub --> scrubbing
- scrubby --> scrubbier
- scrubby --> scrubbiest
- scruffy --> scruffier
- scruffy --> scruffiest
- scrum --> scrummed
- scrum --> scrumming
- scry --> scried
- scud --> scudded
- scud --> scudding
- scudo --> scudi
- scum --> scummed
- scum --> scumming
- scungy --> scungier
- scungy --> scungiest
- scurry --> scurried
- scurvy --> scurvier
- scurvy --> scurviest
- scutellum --> scutella
- scutum --> scuta
- scyphistoma --> scyphistomae
- scyphozoan --> scyphozoa
- scyphus --> scyphi
- seamy --> seamier
- seamy --> seamiest
- second-rater --> second-rater
- seconder --> seconder
- secondo --> secondi
- secretary-general --> secretaries-general
- see --> saw
- see --> seen
- seed --> seed
- seedy --> seedier
- seedy --> seediest
- seek --> sought
- seemly --> seemlier
- seemly --> seemliest
- segno --> segni
- seleucid --> seleucidae
- self --> selves
- sell --> sold
- send --> sent
- senor --> senores
- sensillum --> sensilla
- sent --> senti
- sente --> listente
- senusi senussi --> senussis
- separatrix --> separatrices
- sephardi --> sephardim
- septarium --> septaria
- septennium --> septennia
- septum --> septa
- sequela --> sequelae
- sequestrum --> sequestra
- seraph --> seraphim
- serer --> serer
- serum --> sera
- sestertium --> sestertia
- set --> setting
- seta --> setae
- sew --> sewn
- sexy --> sexier
- sexy --> sexiest
- sgraffito --> sgraffiti
- shabbas --> shabbasim
- shabbat --> shabbatim
- shabby --> shabbier
- shabby --> shabbiest
- shacko --> shackoes
- shadchan --> shadchanim
- shady --> shadier
- shady --> shadiest
- shag --> shagged
- shag --> shagging
- shaggy --> shaggier
- shaggy --> shaggiest
- shake --> shaken
- shake --> shook
- shako --> shakoes
- shaky --> shakier
- shaky --> shakiest
- sham --> shammed
- sham --> shamming
- shammas shammes --> shammosim
- shapely --> shapelier
- shapely --> shapeliest
- sharecrop --> sharecropped
- sharecrop --> sharecropping
- shave --> shaven
- sheaf --> sheaves
- sheatfish --> sheatfishes
- shed --> shed
- shed --> shedding
- shelf --> shelves
- shellac --> shellacked
- shellac --> shellacking
- shellfish --> shellfishes
- shend --> shent
- shew --> shewn
- shifty --> shiftier
- shifty --> shiftiest
- shikar --> shikarred
- shikar --> shikarring
- shillyshally --> shillyshallied
- shim --> shimmed
- shim --> shimming
- shimmy --> shimmied
- shin --> shinned
- shin --> shinning
- shine --> shone
- shinleaf --> shinleaves
- shiny --> shinier
- shiny --> shiniest
- ship --> shipped
- ship --> shipping
- shirty --> shirtier
- shirty --> shirtiest
- shit --> shat
- shit --> shitted
- shit --> shitting
- shittah --> shittim
- shmo --> shmoes
- shoddy --> shoddier
- shoddy --> shoddiest
- shoe --> shod
- shofar shophar --> shofroth
- shoot --> shot
- shop --> shopped
- shop --> shopping
- shophar --> shophroth
- shot --> shotted
- shot --> shotting
- shotgun --> shotgunned
- shotgun --> shotgunning
- shovel --> shovelled
- shovel --> shovelling
- show --> shown
- showy --> showier
- showy --> showiest
- shred --> shredded
- shred --> shredding
- shrewmouse --> shrewmice
- shrink --> shrank
- shrink --> shrunk
- shrink --> shrunken
- shrink-wrap --> shrink-wrapped
- shrink-wrap --> shrink-wrapping
- shrive --> shriven
- shrive --> shrove
- shrivel --> shrivelled
- shrivel --> shrivelling
- shrubby --> shrubbier
- shrubby --> shrubbiest
- shrug --> shrugged
- shrug --> shrugging
- shul --> shuln
- shun --> shunned
- shun --> shunning
- shut --> shutting
- shy --> shied
- shy --> shier
- shy --> shiest
- shy --> shyer
- shy --> shyest
- sic --> sicked
- sic --> sicking
- sickly --> sicklier
- sickly --> sickliest
- siddur --> siddurim
- sideslip --> sideslipped
- sideslip --> sideslipping
- sidestep --> sidestepped
- sidestep --> sidestepping
- sightly --> sightlier
- sightly --> sightliest
- sightsee --> sightsaw
- sightsee --> sightseen
- siglos --> sigloi
- signal --> signalled
- signal --> signalling
- signaler --> signaler
- signer --> signer
- signify --> signified
- signior signore --> signori
- signora --> signore
- signorina --> signorine
- silicify --> silicified
- siliqua --> siliquae
- silky --> silkier
- silky --> silkiest
- silly --> sillier
- silly --> silliest
- silva --> silvae
- silverfish --> silverfishes
- simplify --> simplified
- simulacrum --> simulacra
- sin --> sinned
- sin --> sinning
- sinciput --> sincipita
- sinfonia --> sinfonie
- sing --> sang
- sing --> sung
- sing singe --> singing
- single-step --> single-stepped
- single-step --> single-stepping
- sink --> sank
- sink --> sunk
- sink --> sunken
- sip --> sipped
- sip --> sipping
- sister-in-law --> sisters-in-law
- sistrum --> sistra
- sit --> sat
- sit --> sitting
- situla --> situlae
- skelly --> skellied
- sken --> skenned
- sken --> skenning
- sket --> sketted
- sket --> sketting
- sketchy --> sketchier
- sketchy --> sketchiest
- skewer --> skewer
- ski --> ski'd
- skid --> skidded
- skid --> skidding
- skim --> skimmed
- skim --> skimming
- skimpy --> skimpier
- skimpy --> skimpiest
- skin --> skinned
- skin --> skinning
- skin-pop --> skin-popped
- skin-pop --> skin-popping
- skinny --> skinnier
- skinny --> skinniest
- skinny-dip --> skinny-dipped
- skinny-dip --> skinny-dipping
- skip --> skipped
- skip --> skipping
- skivvy --> skivvied
- skydive --> skydove
- slab --> slabbed
- slab --> slabbing
- slag --> slagged
- slag --> slagging
- slam --> slammed
- slam --> slamming
- slap --> slapped
- slap --> slapping
- slaphappy --> slaphappier
- slaphappy --> slaphappiest
- slat --> slatted
- slat --> slatting
- slaty --> slatier
- slaty --> slatiest
- slaver --> slaver
- slay --> slain
- slay --> slew
- sleazy --> sleazier
- sleazy --> sleaziest
- sled --> sledding
- sleep --> slept
- sleepy --> sleepier
- sleepy --> sleepiest
- slide --> slid
- slide --> slidden
- slim --> slimmer
- slim --> slimmest
- slimsy --> slimsier
- slimsy --> slimsiest
- slimy --> slimier
- slimy --> slimiest
- sling --> slung
- slink --> slunk
- slinky --> slinkier
- slinky --> slinkiest
- slip --> slipped
- slip --> slipping
- slippy --> slippier
- slippy --> slippiest
- slit --> slitting
- slog --> slogged
- slog --> slogging
- slop --> slopped
- slop --> slopping
- sloppy --> sloppier
- sloppy --> sloppiest
- slot --> slotted
- slot --> slotting
- slug --> slugged
- slug --> slugging
- slum --> slummed
- slum --> slumming
- slur --> slurred
- slur --> slurring
- sly --> slier
- sly --> sliest
- sly --> slyer
- sly --> slyest
- smalto --> smalti
- smarmy --> smarmier
- smarmy --> smarmiest
- smell --> smelt
- smelly --> smellier
- smelly --> smelliest
- smite --> smit
- smite --> smitten
- smite --> smote
- smoky --> smokier
- smoky --> smokiest
- smug --> smugger
- smug --> smuggest
- smut --> smutted
- smut --> smutting
- snag --> snagged
- snag --> snagging
- snaggletooth --> snaggleteeth
- snailfish --> snailfishes
- snaky --> snakier
- snaky --> snakiest
- snap --> snapped
- snap --> snapping
- snappy --> snappier
- snappy --> snappiest
- snatchy --> snatchier
- snatchy --> snatchiest
- snazzy --> snazzier
- snazzy --> snazziest
- sneak --> snuck
- sneaker --> sneaker
- sned --> snedded
- sned --> snedding
- sniffy --> sniffier
- sniffy --> sniffiest
- snip --> snipped
- snip --> snipping
- snipefish --> snipefishes
- snivel --> snivelled
- snivel --> snivelling
- snog --> snogged
- snog --> snogging
- snooty --> snootier
- snooty --> snootiest
- snotty --> snottier
- snotty --> snottiest
- snowy --> snowier
- snowy --> snowiest
- snub --> snubbed
- snub --> snubbing
- snuffer --> snuffer
- snuffy --> snuffier
- snuffy --> snuffiest
- snug --> snugged
- snug --> snugger
- snug --> snuggest
- snug --> snugging
- soapy --> soapier
- soapy --> soapiest
- sob --> sobbed
- sob --> sobbing
- socman sokeman --> socmen
- sod --> sodded
- sod --> sodding
- soft-pedal --> soft-pedalled
- soft-pedal --> soft-pedalling
- soggy --> soggier
- soggy --> soggiest
- sol sole --> soles
- solarium --> solaria
- solatium --> solatia
- solder --> solder
- soldo --> soldi
- solemnify --> solemnified
- solfeggio --> solfeggi
- solidify --> solidified
- solidus --> solidi
- solo --> soli
- solum --> sola
- soma --> somata
- son-in-law --> sons-in-law
- sonsy --> sonsier
- sonsy --> sonsiest
- soothsay --> soothsaid
- sooty --> sootier
- sooty --> sootiest
- sop --> sopped
- sop --> sopping
- soppy --> soppier
- soppy --> soppiest
- soprano --> soprani
- sordino --> sordini
- sorosis --> soroses
- sorry --> sorrier
- sorry --> sorriest
- sorus --> sori
- soupy --> soupier
- soupy --> soupiest
- souther --> souther
- southerner --> southerner
- sovkhoz --> sovkhozy
- sow --> sown
- spadefish --> spadefishes
- spadix --> spadices
- spag --> spagged
- spag --> spagging
- span --> spanned
- span --> spanning
- spancel --> spancelled
- spancel --> spancelling
- spar --> sparred
- spar --> sparring
- spat --> spatted
- spat --> spatting
- speak --> spoke
- speak --> spoken
- spearfish --> spearfishes
- specify --> specified
- spectrum --> spectra
- speculum --> specula
- speechify --> speechified
- speed --> sped
- speedy --> speedier
- speedy --> speediest
- spell --> spelt
- spellbind --> spellbound
- spend --> spent
- spermatium --> spermatia
- spermatogonium --> spermatogonia
- spermatozoon --> spermatozoa
- spermogonium --> spermogonia
- sphinx --> sphinges
- spica --> spicae
- spiculum --> spicula
- spicy --> spicier
- spicy --> spiciest
- spiffy --> spiffier
- spiffy --> spiffiest
- spiky --> spikier
- spiky --> spikiest
- spill --> spilt
- spin --> spinning
- spin --> spun
- spin-dry --> spin-dried
- spindly --> spindlier
- spindly --> spindliest
- spiny --> spinier
- spiny --> spiniest
- spiral --> spiralled
- spiral --> spiralling
- spirillum --> spirilla
- spit --> spat
- spit --> spitted
- spit --> spitting
- splashy --> splashier
- splashy --> splashiest
- splayfoot --> splayfeet
- splenius --> splenii
- split --> splitting
- spoil --> spoilt
- spongy --> spongier
- spongy --> spongiest
- spooky --> spookier
- spooky --> spookiest
- spoon-feed --> spoon-fed
- spoony --> spoonier
- spoony --> spooniest
- sporangium --> sporangia
- sporogonium --> sporogonia
- sporozoan --> sporozoa
- sporty --> sportier
- sporty --> sportiest
- spot --> spotted
- spot --> spotting
- spotlight --> spotlit
- spotty --> spottier
- spotty --> spottiest
- spreader --> spreader
- sprig --> sprigged
- sprig --> sprigging
- sprightly --> sprightlier
- sprightly --> sprightliest
- spring --> sprang
- spring --> sprung
- springer --> springer
- springhaas --> springhase
- springy --> springier
- springy --> springiest
- spry --> sprier
- spry --> spriest
- spud --> spudded
- spud --> spudding
- spumone --> spumoni
- spur --> spurred
- spur --> spurring
- sputum --> sputa
- spy --> spied
- squama --> squamae
- squash --> squashes
- squashy --> squashier
- squashy --> squashiest
- squat --> squatted
- squat --> squatter
- squat --> squattest
- squat --> squatting
- squatty --> squattier
- squatty --> squattiest
- squeegee --> squilgee
- squib --> squibbed
- squib --> squibbing
- squid --> squidded
- squid --> squidding
- squiffy --> squiffier
- squiffy --> squiffiest
- squilla --> squillae
- squirrelfish --> squirrelfishes
- squiz --> squizzes
- stab --> stabbed
- stab --> stabbing
- stadium --> stadia
- stagy --> stagier
- stagy --> stagiest
- stalky --> stalkier
- stalky --> stalkiest
- stall-feed --> stall-fed
- stamen --> stamina
- staminodium --> staminodia
- stand --> stood
- stapes --> stapedes
- staphylococcus --> staphylococci
- stapler --> stapler
- star --> starred
- star --> starring
- starchy --> starchier
- starchy --> starchiest
- starer --> starer
- starest --> starest
- starets --> startsy
- starfish --> starfishes
- starry --> starrier
- starry --> starriest
- stately --> statelier
- stately --> stateliest
- stave --> stove
- steady --> steadied
- steady --> steadier
- steady --> steadiest
- steal --> stole
- steal --> stolen
- stealthy --> stealthier
- stealthy --> stealthiest
- steamy --> steamier
- steamy --> steamiest
- stele --> stelae
- stellify --> stellified
- stem --> stemmed
- stem --> stemming
- stemma --> stemmata
- stencil --> stencilled
- stencil --> stencilling
- stenosis --> stenoses
- step --> stepped
- step --> stepping
- stepchild --> stepchildren
- sternum --> sterna
- stet --> stetted
- stet --> stetting
- stick --> stuck
- stigma --> stigmata
- stiletto --> stilettoeing
- stimulus --> stimuli
- sting --> stung
- stingy --> stingier
- stingy --> stingiest
- stink --> stank
- stink --> stunk
- stipes --> stipites
- stir --> stirred
- stir --> stirring
- stirps --> stirpes
- stoa --> stoae
- stocker --> stocker
- stockfish --> stockfishes
- stocky --> stockier
- stocky --> stockiest
- stodgy --> stodgier
- stodgy --> stodgiest
- stoma --> stomata
- stomodaeum --> stomodaea
- stomodeum --> stomodea
- stonefish --> stonefishes
- stony --> stonier
- stony --> stoniest
- stop --> stopped
- stop --> stopping
- stormy --> stormier
- stormy --> stormiest
- story --> storied
- stot --> stotted
- stot --> stotting
- stotinka --> stotinki
- stotinka --> stotkini
- strap --> strapped
- strap --> strapping
- strappado --> strappadoes
- stratify --> stratified
- stratocumulus --> stratocumuli
- stratum --> strata
- stratus --> strati
- streaky --> streakier
- streaky --> streakiest
- streamy --> streamier
- streamy --> streamiest
- streptococcus --> streptococci
- stretcher --> stretcher
- stretchy --> stretchier
- stretchy --> stretchiest
- stretto --> stretti
- strew --> strewn
- stria --> striae
- stride --> stridden
- stride --> strode
- strike --> struck
- string --> strung
- stringy --> stringier
- stringy --> stringiest
- strip --> stripped
- strip --> stripping
- striper --> stiper
- stripy --> stripier
- stripy --> stripiest
- strive --> striven
- strive --> strove
- strobilus --> strobili
- stroma --> stromata
- strong --> stronger
- strong --> strongest
- strop --> stropped
- strop --> stropping
- stroppy --> stroppier
- stroppy --> stroppiest
- strow --> strown
- strum --> strummed
- strum --> strumming
- struma --> strumae
- strut --> strutted
- strut --> strutting
- stub --> stubbed
- stub --> stubbing
- stucco --> stuccoes
- stud --> studded
- stud --> studding
- study --> studied
- stuffy --> stuffier
- stuffy --> stuffiest
- stultify --> stultified
- stum --> stummed
- stum --> stumming
- stumpy --> stumpier
- stumpy --> stumpiest
- stun --> stunned
- stun --> stunning
- stupefy --> stupefied
- sturdy --> sturdier
- sturdy --> sturdiest
- sty --> stied
- stylopodium --> stylopodia
- stylops --> stylopes
- stylus --> styli
- stymie --> stymying
- sub --> subbed
- sub --> subbing
- subcortex --> subcortices
- subdelirium --> subdeliria
- subgenus --> subgenera
- subindex --> subindices
- subjectify --> subjectified
- sublet --> subletting
- submariner --> submariner
- submit --> submitted
- submit --> submitting
- submucosa --> submucosae
- subphylum --> subphyla
- substratum --> substrasta
- subtotal --> subtotalled
- subtotal --> subtotalling
- succedaneum --> succedanea
- succubus --> succubi
- suckerfish --> suckerfishes
- suckfish --> suckfishes
- sudarium --> sudaria
- sudatorium --> sudatoria
- sulcus --> sulci
- sulky --> sulkier
- sulky --> sulkiest
- sully --> sullied
- sulphuret --> sulphuretted
- sulphuret --> sulphuretting
- sultry --> sultrier
- sultry --> sultriest
- sum --> summed
- sum --> summing
- summa --> summae
- sun --> sunned
- sun --> sunning
- sunfish --> sunfishes
- sunny --> sunnier
- sunny --> sunniest
- sup --> supped
- sup --> supping
- supercargo --> supercargoes
- superhero --> superheroes
- supernova --> supernovae
- superstratum --> superstrata
- supply --> supplied
- surgeonfish --> surgeonfishes
- surly --> surlier
- surly --> surliest
- swab --> swabbed
- swab --> swabbing
- swag --> swagged
- swag --> swagging
- swagger --> swagger
- swami --> swamies
- swanky --> swankier
- swanky --> swankiest
- swap --> swapped
- swap --> swapping
- swap --> swopped
- swap --> swopping
- swap --> swops
- swarthy --> swarthier
- swarthy --> swarthiest
- swat --> swatted
- swat --> swatting
- swear --> swore
- swear --> sworn
- sweaty --> sweatier
- sweaty --> sweatiest
- sweep --> swept
- sweetiewife --> sweetiewives
- swell --> swollen
- swellfish --> swellfishes
- swig --> swigged
- swig --> swigging
- swim --> swam
- swim --> swimming
- swim --> swum
- swing --> swung
- swivel --> swivelled
- swivel --> swivelling
- swordfish --> swordfishes
- swot --> swotted
- swot --> swotting
- syconium --> syconia
- syllabify --> syllabified
- syllabus --> syllabi
- syllepsis --> syllepses
- symbol --> symbolled
- symbol --> symbolling
- symphysis --> symphyses
- sympodium --> sympodia
- symposium --> symposia
- synapsis --> synapses
- synarthrosis --> synarthroses
- synclinorium --> synclinoria
- syncytium --> syncytia
- syndesmosis --> syndesmoses
- synopsis --> synopses
- syntagma --> syntagmata
- synthesis --> syntheses
- syphiloma --> syphilomata
- syrinx --> syringes
- syssarcosis --> syssarcoses
- tab --> tabbed
- tab --> tabbing
- tableau --> tableaux
- tacky --> tackier
- tacky --> tackiest
- taenia tenia --> taeniae
- tag --> tagged
- tag --> tagging
- take --> taken
- take --> took
- talc --> talcked
- talc --> talcking
- talky --> talkier
- talky --> talkiest
- tallith --> tallaisim
- tallith --> tallithes
- tallith --> tallitoth
- tally --> tallied
- tally-ho --> tally-ho'd
- talus --> tali
- tammy --> tammied
- tan --> tanned
- tan --> tanner
- tan --> tannest
- tan --> tanning
- tangy --> tangier
- tangy --> tangiest
- tap --> tapped
- tap --> tapping
- tapetum --> tapeta
- tar --> tarred
- tar --> tarring
- tarantula --> tarantulae
- tardy --> tardier
- tardy --> tardiest
- tarry --> tarried
- tarsometatarsus --> tarsometatarsi
- tarsus --> tarsi
- tassel --> tasselled
- tassel --> tasselling
- tasty --> tastier
- tasty --> tastiest
- tat --> tatted
- tat --> tatting
- tatty --> tattier
- tatty --> tattiest
- tawdry --> tawdrier
- tawdry --> tawdriest
- tax taxis --> taxes
- taxi --> taxies
- taxi --> taxying
- taxis --> taxis
- taxon --> taxa
- teach --> taught
- tear --> tore
- tear --> torn
- teasel --> teaselled
- teasel --> teaselling
- techy --> techier
- techy --> techiest
- tectrix --> tectrices
- ted --> tedded
- ted --> tedding
- teenager --> teenager
- teeny --> teenier
- teeny --> teeniest
- teetotaler --> teetotaler
- tegmen --> tegmina
- tela --> telae
- telamon --> telamones
- telangiectasia telangiectasis --> telangiectases
- telium --> telia
- tell --> told
- tempo --> tempi
- tenaculum --> tenacula
- tenderfoot --> tenderfeet
- tenia --> teniae
- tenuis --> tenues
- tepefy --> tepefied
- teraph --> teraphim
- teras --> terata
- teredo --> teredines
- tergum --> terga
- terminus --> termini
- terrarium --> terraria
- terrify --> terrified
- terzetto --> terzetti
- tessera --> tesserae
- testa --> testae
- tester --> tester
- testes --> testes
- testify --> testified
- testis --> testes
- testudo --> testudines
- testy --> testier
- testy --> testiest
- tetchy --> tetchier
- tetchy --> tetchiest
- tetrahedron --> tetrahedra
- tetraskelion --> tetraskelia
- thalamencephalon --> thalamencephala
- thalamus --> thalami
- thallus --> thalli
- theatre-in-the-round --> theatres-in-the-round
- theca --> thecae
- thesaurus --> thesauri
- thesis --> theses
- thickleaf --> thickleaves
- thief --> thieves
- thin --> thinned
- thin --> thinner
- thin --> thinnest
- thin --> thinning
- think --> thought
- third-rater --> third-rater
- thirsty --> thirstier
- thirsty --> thirstiest
- tholos --> tholoi
- thorax --> thoraces
- thorny --> thornier
- thorny --> thorniest
- thready --> threadier
- thready --> threadiest
- thrifty --> thriftier
- thrifty --> thriftiest
- thrive --> thriven
- thrive --> throve
- throaty --> throatier
- throaty --> throatiest
- throb --> throbbed
- throb --> throbbing
- thrombus --> thrombi
- throw --> threw
- throw --> thrown
- thrum --> thrummed
- thrum --> thrumming
- thud --> thudded
- thud --> thudding
- thymus --> thymi
- thyrse --> therses
- thyrsus --> thyrsi
- tibia --> tibiae
- tidy --> tidied
- tidy --> tidier
- tidy --> tidiest
- tie --> tying
- tilefish --> tilefishes
- timely --> timelier
- timely --> timeliest
- tin --> tinned
- tin --> tinning
- tinny --> tinnier
- tinny --> tinniest
- tinsel --> tinselled
- tinsel --> tinselling
- tintinnabulum --> tintinnabula
- tiny --> tinier
- tiny --> tiniest
- tip --> tipped
- tip --> tipping
- tipsy --> tipsier
- tipsy --> tipsiest
- tiro tyro --> tyros
- titmouse --> titmice
- tittup --> tittupped
- tittup --> tittupping
- toadfish --> toadfishes
- toady --> toadied
- tobacco --> tobaccoes
- tog --> togged
- tog --> togging
- tomato --> tomatoes
- tomentum --> tomenta
- tondo --> tondi
- tonneau --> tonneaux
- tony --> tonier
- tony --> toniest
- tooth --> teeth
- toothy --> toothier
- toothy --> toothiest
- top --> topped
- top --> topping
- toper --> toper
- tophus --> tophi
- topos --> topoi
- tornado --> tornadoes
- torpedo --> torpedoes
- torrefy --> torrefied
- torrefy --> torrify
- torso --> torsi
- torus --> tori
- tot --> totted
- tot --> totting
- total --> totalled
- total --> totalling
- touchy --> touchier
- touchy --> touchiest
- touraco turaco --> touracos
- towel --> towelled
- towel --> towelling
- trabecula --> trabeculae
- trachea --> tracheae
- trader --> trader
- traditor --> traditores
- traffic --> trafficked
- traffic --> trafficking
- tragus --> tragi
- tram --> trammed
- tram --> tramming
- trammel --> trameled
- trammel --> trameling
- trammel --> tramelled
- trammel --> tramelling
- trammel --> tramels
- transfer --> transferred
- transfer --> transferring
- transfix --> transfixt
- tranship --> transhipped
- tranship --> transhipping
- transmit --> transmitted
- transmit --> transmitting
- transmogrify --> transmogrified
- transship --> tranship
- transship --> transshipped
- transship --> transshipping
- trap --> trapped
- trap --> trapping
- trapan --> trapanned
- trapan --> trapanning
- trapezium --> trapezia
- trapezohedron --> trapezohedra
- trashy --> trashier
- trashy --> trashiest
- trauma --> traumata
- travel --> travelled
- travel --> travelling
- travesty --> travestied
- tread --> trod
- tread --> trodden
- trek --> trekked
- trek --> trekking
- trendy --> trendier
- trendy --> trendiest
- trepan --> trepanned
- trepan --> trepanning
- treponema --> treponemata
- trichina --> trichinae
- tricksy --> tricksier
- tricksy --> tricksiest
- tricky --> trickier
- tricky --> trickiest
- triclinium --> triclinia
- triennium --> triennia
- triforium --> triforia
- trig --> trigged
- trig --> trigging
- triggerfish --> triggerfishes
- trihedron --> trihedra
- trim --> trimmed
- trim --> trimmer
- trim --> trimmest
- trim --> trimming
- trimer --> trimer
- trip --> tripped
- trip --> tripping
- triskelion --> triskelia
- trisoctahedron --> trisoctahedra
- triumvir --> triumviri
- trivium --> trivia
- trochlea --> trochleae
- trog --> trogged
- trog --> trogging
- tropaeolum --> tropaeola
- trot --> trotted
- trot --> trotting
- trou-de-loup --> trous-de-loup
- trousseau --> trousseaux
- trowel --> trowelled
- trowel --> trowelling
- true --> truer
- true --> truest
- trunkfish --> trunkfishes
- trusty --> trustier
- trusty --> trustiest
- try --> tried
- tryma --> trymata
- tuba --> tubae
- tubby --> tubbier
- tubby --> tubbiest
- tug --> tugged
- tug --> tugging
- tumefy --> tumefied
- tun --> tunned
- tun --> tunning
- tunnel --> tunnelled
- tunnel --> tunnelling
- tup --> tupped
- tup --> tupping
- turf --> turves
- turfy --> turfier
- turfy --> turfiest
- tut-tut --> tut-tutted
- tut-tut --> tut-tutting
- tweedy --> tweedier
- tweedy --> tweediest
- twig --> twigged
- twig --> twigging
- twiggy --> twiggier
- twiggy --> twiggiest
- twin --> twinned
- twin --> twinning
- twit --> twitted
- twit --> twitting
- tympanum --> tympana
- typeset --> typesetting
- typewrite --> typewritten
- typewrite --> typewrote
- typify --> typified
- ubermensch --> ubermenschen
- ugli --> uglies
- uglify --> uglified
- ugly --> uglier
- ugly --> ugliest
- uighur --> uigurs
- ulna --> ulnae
- ultimatum --> ultimata
- umbilicus --> umbilici
- umbo --> umbones
- umbra --> umbrae
- unbar --> unbarred
- unbar --> unbarring
- unbend --> unbent
- unbind --> unbound
- uncap --> uncapped
- uncap --> uncapping
- unclog --> unclogged
- unclog --> unclogging
- unclothe --> unclad
- uncus --> unci
- underbid --> underbidding
- underbuy --> underbought
- undercut --> undercutting
- underfeed --> underfed
- undergird --> undergirt
- undergo --> undergone
- undergo --> underwent
- underlay --> underlaid
- underlet --> underletting
- underlie --> underlain
- underlie --> underlay
- underlie --> underlying
- underpay --> underpaid
- underpin --> underpinned
- underpin --> underpinning
- underprop --> underpropped
- underprop --> underpropping
- undersell --> undersold
- underset --> undersetting
- undershoot --> undershot
- understand --> understood
- understudy --> understudied
- undertake --> undertaken
- undertake --> undertook
- underwrite --> underwritten
- underwrite --> underwrote
- undo --> undid
- undo --> undone
- unfit --> unfitted
- unfit --> unfitting
- unfreeze --> unfroze
- unfreeze --> unfrozen
- unfriendly --> unfriendlier
- unfriendly --> unfriendliest
- ungainly --> ungainlier
- ungainly --> ungainliest
- ungodly --> ungodlier
- ungodly --> ungodliest
- unhappy --> unhappier
- unhappy --> unhappiest
- unhealthy --> unhealthier
- unhealthy --> unhealthiest
- unholy --> unholier
- unholy --> unholiest
- unify --> unified
- unkennel --> unkennelled
- unkennel --> unkennelling
- unknit --> unknitted
- unknit --> unknitting
- unlay --> unlaid
- unlearn --> unlearnt
- unmake --> unmade
- unman --> unmanned
- unman --> unmanning
- unpeg --> unpegged
- unpeg --> unpegging
- unpin --> unpinned
- unpin --> unpinning
- unplug --> unplugged
- unplug --> unplugging
- unravel --> unravelled
- unravel --> unravelling
- unreeve --> unrove
- unrig --> unrigged
- unrig --> unrigging
- unrip --> unripped
- unrip --> unripping
- unruly --> unrulier
- unruly --> unruliest
- unsay --> unsaid
- unship --> unshipped
- unship --> unshipping
- unsling --> unslung
- unsnap --> unsnapped
- unsnap --> unsnapping
- unspeak --> unspoke
- unspeak --> unspoken
- unsteady --> unsteadied
- unstep --> unstepped
- unstep --> unstepping
- unstick --> unstuck
- unstop --> unstopped
- unstop --> unstopping
- unstring --> unstrung
- unswear --> unswore
- unswear --> unsworn
- unteach --> untaught
- unthink --> unthought
- untidy --> untidied
- untidy --> untidier
- untidy --> untidiest
- untie --> untying
- untread --> untrod
- untread --> untrodden
- unwind --> unwound
- unwrap --> unwrapped
- unwrap --> unwrapping
- unzip --> unzipped
- unzip --> unzipping
- up --> upped
- up --> upping
- upbuild --> upbuilt
- upheave --> uphove
- uphold --> upheld
- uppercut --> uppercutting
- uprise --> uprisen
- uprise --> uprose
- upset --> upsetting
- upspring --> upsprang
- upspring --> upsprung
- upsweep --> upswept
- upswell --> upswollen
- upswing --> upswung
- uredinium --> uredinia
- uredium --> uncidia
- uredo --> uredines
- uredosorus --> uredosori
- urethra --> urethrae
- urinalysis --> urinalyses
- uterus --> uteri
- utriculus --> utriculi
- uvula --> uvulae
- vacuum --> vacua
- vag --> vagged
- vag --> vagging
- vagina --> vaginae
- vagus vagus --> vagi
- vallecula --> valleculae
- vaporetto --> vaporetti
- varix --> varices
- vary --> varied
- vas --> vasa
- vasculum --> vascula
- vasty --> vastier
- vasty --> vastiest
- vat --> vatted
- vat --> vatting
- velamen --> velamina
- velarium --> velaria
- velum --> vela
- vena --> venae
- ventriculus --> ventriculi
- verbify --> verbified
- verify --> verified
- vermis --> vermes
- verruca --> verrucae
- versify --> versified
- vertebra --> vertebrae
- vertex --> vertices
- vertigo --> vertigines
- vertigo --> vertigoes
- vesica --> vesicae
- vest --> vest
- vet --> vetted
- vet --> vetting
- veto --> vetoes
- vexillum --> vexilla
- viaticum --> viatica
- viator --> viatores
- vibraculum --> vibracula
- vibrissa --> vibrissae
- vice-chairman --> vice-chairman
- victual --> victualled
- victual --> victualling
- vie --> vying
- viewy --> viewier
- viewy --> viewiest
- vilify --> vilified
- villus --> villi
- vimen --> vimina
- vinculum --> vincula
- virago --> viragoes
- virtuoso --> virtuosi
- vis --> vires
- vita --> vitae
- vitellus --> vitelli
- vitrify --> vitrified
- vitriol --> vitriolled
- vitriol --> vitriolling
- vitta --> vittae
- vivarium --> vivaria
- vivify --> vivified
- volcano --> volcanoes
- volkslied --> volkslieder
- volta --> volte
- volva --> volvae
- vortex --> vortices
- vorticella --> vorticellae
- vox --> voces
- vulva --> vulvae
- wacky --> wackier
- wacky --> wackiest
- wad --> wadded
- wad --> wadding
- waddy --> waddied
- wadset --> wadsetted
- wadset --> wadsetting
- wag --> wagged
- wag --> wagging
- wagon-lit --> wagons-lits
- wahabi wahhabi --> wahhabis
- wake --> woke
- wake --> woken
- wan --> wanned
- wan --> wanner
- wan --> wannest
- wan --> wanning
- wanderjahr --> wanderjahre
- war --> warred
- war --> warring
- wary --> warier
- wary --> wariest
- washy --> washier
- washy --> washiest
- waster --> waster
- water-ski --> water-ski'd
- wavy --> wavier
- wavy --> waviest
- waxy --> waxier
- waxy --> waxiest
- waylay --> waylaid
- weakfish --> weakfishes
- weakly --> weaklier
- weakly --> weakliest
- wealthy --> wealthier
- wealthy --> wealthiest
- wear --> wore
- wear --> worn
- weary --> wearied
- weary --> wearier
- weary --> weariest
- weather strip --> weather stripped
- weather strip --> weather stripping
- weave --> wove
- weave --> woven
- web --> webbed
- web --> webbing
- webby --> webbier
- webby --> webbiest
- wed --> wedded
- wed --> wedding
- weed --> weed
- weedy --> weedier
- weedy --> weediest
- weensy --> weensier
- weensy --> weensiest
- weeny --> weenier
- weeny --> weeniest
- weep --> wept
- weepy --> weepier
- weepy --> weepiest
- weighty --> weightier
- weighty --> weightiest
- well --> best
- well --> better
- welsher --> welsher
- werewolf --> werewolves
- wet --> wetted
- wet --> wetter
- wet --> wettest
- wet --> wetting
- whacky --> whackier
- whacky --> whackiest
- wham --> whammed
- wham --> whamming
- whap --> whapped
- whap --> whapping
- wharf --> wharves
- whet --> whetted
- whet --> whetting
- whimsy --> whimsier
- whimsy --> whimsiest
- whinny --> whinnied
- whip --> whipped
- whip --> whipping
- whipper-in --> whippers-in
- whipsaw --> whipsawn
- whir --> whirred
- whir --> whirring
- whistle stop --> whistle stopped
- whistle stop --> whistle stopping
- whitefish --> whitefishes
- whiz --> whizzed
- whiz --> whizzes
- whiz --> whizzing
- wholesaler --> wholesaler
- whop --> whopped
- whop --> whopping
- wieldy --> wieldier
- wieldy --> wieldiest
- wife --> wives
- wig --> wigged
- wig --> wigging
- wigwag --> wigwagged
- wigwag --> wigwagging
- wildcat --> wildcatted
- wildcat --> wildcatting
- wily --> wilier
- wily --> wiliest
- win --> winning
- win --> won
- wind --> wound
- window shop --> window shopped
- window shop --> window shopping
- windy --> windier
- windy --> windiest
- winterfeed --> winterfed
- wintery --> winterier
- wintery --> winteriest
- wintry --> wintrier
- wintry --> wintriest
- winy --> winier
- winy --> winiest
- wiredraw --> wiredrawn
- wiredraw --> wiredrew
- wiry --> wirier
- wiry --> wiriest
- wispy --> wispier
- wispy --> wispiest
- withdraw --> withdrawn
- withdraw --> withdrew
- withhold --> withheld
- withstand --> withstood
- witty --> wittier
- witty --> wittiest
- wolf --> wolves
- wolffish --> wolffishes
- won --> wonned
- won --> wonning
- wonky --> wonkier
- wonky --> wonkiest
- woodlouse --> woodlice
- woodsy --> woodsier
- woodsy --> woodsiest
- woody --> woodier
- woody --> woodiest
- woolly --> woollier
- woolly --> woolliest
- woozy --> woozier
- woozy --> wooziest
- wordy --> wordier
- wordy --> wordiest
- work --> wrought
- worldly --> worldlier
- worldly --> worldliest
- wormy --> wormier
- wormy --> wormiest
- worry --> worried
- worship --> worshipped
- worship --> worshipping
- worthy --> worthier
- worthy --> worthiest
- wrap --> wrapped
- wrap --> wrapping
- wreckfish --> wreckfishes
- wring --> wrung
- write --> written
- write --> wrote
- wry --> wried
- wry --> wrier
- wry --> wriest
- wry --> wryer
- wry --> wryest
- wunderkind --> wunderkinder
- xiphisternum --> xiphisterna
- yak --> yakked
- yak --> yakking
- yap --> yapped
- yap --> yapping
- yare --> yarer
- yare --> yarest
- yeasty --> yeastier
- yeasty --> yeastiest
- yen --> yenned
- yen --> yenning
- yeshiva --> yeshivahs
- yeshiva --> yeshivoth
- yodel --> yodelled
- yodel --> yodelling
- yogi --> yogin
- young --> younger
- young --> youngest
- yourself --> yourselves
- yummy --> yummier
- yummy --> yummiest
- zamindari zemindari --> zamindaris
- zany --> zanier
- zany --> zaniest
- zap --> zapped
- zap --> zapping
- zecchino --> zecchini
- zero --> zeroes
- zigzag --> zigzagged
- zigzag --> zigzagging
- zip --> zipped
- zip --> zipping
- zippy --> zippier
- zippy --> zippiest
- zoaea --> zoeas
- zoaea zoea --> zoaeae
- zoea --> zoeae
- zoon --> zoa
- zoonosis --> zoonoses
- zoosporangium --> zoosporangia
