Toggle Navigation
Games
Blog
News
Class PIN
Join for Free
Sign in
Toggle Navigation
Games
PIN
Join for Free
Blog
Pricing
News
Contact us
Help center
Sign in
Study
Plural & irregular nouns
0
%
0
0
0
Back
Restart
bacterium
bacteria
Oops!
Okay!
photo
photos
Oops!
Okay!
alumnus
alumni
Oops!
Okay!
medium
media
Oops!
Okay!
appendix
appendices
Oops!
Okay!
thesis
theses
Oops!
Okay!
child
children
Oops!
Okay!
fish
fish
Oops!
Okay!
family
families
Oops!
Okay!
deer
deer
Oops!
Okay!
zoo
zoos
Oops!
Okay!
phenomenon
phenomena
Oops!
Okay!
person
people
Oops!
Okay!
fungus
fungi
Oops!
Okay!
matrix
matrices
Oops!
Okay!
alga
algae
Oops!
Okay!
foot
feet
Oops!
Okay!
wife
wives
Oops!
Okay!
woman
women
Oops!
Okay!
cactus
cacti
Oops!
Okay!
dress
dresses
Oops!
Okay!
video
videos
Oops!
Okay!
sheep
sheep
Oops!
Okay!
hero
heroes
Oops!
Okay!
painting
paintings
Oops!
Okay!
species
species
Oops!
Okay!
bus
buses
Oops!
Okay!
elf
elves
Oops!
Okay!
tooth
teeth
Oops!
Okay!
vertebra
vertebrae
Oops!
Okay!
brush
brushes
Oops!
Okay!
fox
foxes
Oops!
Okay!
watch
watches
Oops!
Okay!
radius
radii
Oops!
Okay!
key
keys
Oops!
Okay!
house
houses
Oops!
Okay!
mouse
mice
Oops!
Okay!
wolf
wolves
Oops!
Okay!
toy
toys
Oops!
Okay!
Your experience on this site will be improved by allowing cookies.
Allow cookies