Toggle Navigation
Games
Blog
Class PIN
Join for Free
Sign in
Toggle Navigation
Games
PIN
Join for Free
Blog
Pricing
Contact us
Help center
Sign in
Study
IRREGULAR NOUNS
0
%
0
0
0
Back
Restart
cactus
cacti / cactuses
Oops!
Okay!
life
lives
Oops!
Okay!
shrimp
shrimp
Oops!
Okay!
tooth
teeth
Oops!
Okay!
penny
pence (BrE)
Oops!
Okay!
thesis
theses
Oops!
Okay!
sheep
sheep
Oops!
Okay!
woman
women
Oops!
Okay!
torpedo
torpedoes
Oops!
Okay!
fungus
fungi
Oops!
Okay!
bacterium
bacteria
Oops!
Okay!
deer
deer
Oops!
Okay!
foot
feet
Oops!
Okay!
buffalo
buffalo
Oops!
Okay!
analysis
analyses
Oops!
Okay!
dice
dice (originally singular 'die' plural 'dice')
Oops!
Okay!
mouse
mice
Oops!
Okay!
goose
geese
Oops!
Okay!
person
people / PERSONS only in legal contexts, or on purpose/
Oops!
Okay!
fish
fish / FISHES only when referring to different types of fish/
Oops!
Okay!
calf
calves
Oops!
Okay!
hero
heroes
Oops!
Okay!
moose
moose
Oops!
Okay!
criterion
criteria
Oops!
Okay!
child
children
Oops!
Okay!
ox
oxen
Oops!
Okay!
crisis
crises
Oops!
Okay!
man
men
Oops!
Okay!
datum
data
Oops!
Okay!
phenomenon
phenomena
Oops!
Okay!
Your experience on this site will be improved by allowing cookies.
Allow cookies