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
Irregular Plural Nouns
0
%
0
0
0
Back
Restart
person
people
Oops!
Okay!
deer
deer
Oops!
Okay!
child
children
Oops!
Okay!
moose
moose
Oops!
Okay!
cactus
cacti
Oops!
Okay!
scarf
scarves
Oops!
Okay!
nucleus
nuclei
Oops!
Okay!
formula
formulae
Oops!
Okay!
oasis
oases
Oops!
Okay!
die
dice
Oops!
Okay!
half
halves
Oops!
Okay!
radius
radii
Oops!
Okay!
bacterium
bacteria
Oops!
Okay!
man
men
Oops!
Okay!
knife
knives
Oops!
Okay!
axis
axes
Oops!
Okay!
sheep
sheep
Oops!
Okay!
alumnus
alumni
Oops!
Okay!
offspring
offspring
Oops!
Okay!
foot
feet
Oops!
Okay!
matrix
matrices
Oops!
Okay!
woman
women
Oops!
Okay!
salmon
salmon
Oops!
Okay!
analysis
analyses
Oops!
Okay!
elf
elves
Oops!
Okay!
goose
geese
Oops!
Okay!
wife
wives
Oops!
Okay!
medium
media
Oops!
Okay!
thesis
theses
Oops!
Okay!
loaf
loaves
Oops!
Okay!
appendix
appendices
Oops!
Okay!
antenna
antennae
Oops!
Okay!
ox
oxen
Oops!
Okay!
fungus
fungi
Oops!
Okay!
mouse
mice
Oops!
Okay!
vertebra
vertebrae
Oops!
Okay!
aircraft
aircraft
Oops!
Okay!
index
indeces
Oops!
Okay!
hypothesis
hypotheses
Oops!
Okay!
quiz
quizzes
Oops!
Okay!
series
series
Oops!
Okay!
tooth
teeth
Oops!
Okay!
self
selves
Oops!
Okay!
species
species
Oops!
Okay!
louse
lice
Oops!
Okay!
wolf
wolves
Oops!
Okay!
fish
fish
Oops!
Okay!
life
lives
Oops!
Okay!
phenomenon
phenomena
Oops!
Okay!
leaf
leaves
Oops!
Okay!
Your experience on this site will be improved by allowing cookies.
Allow cookies