English Grammar. Vocabulary. Irregular Nouns: 106 words. Singular
Plural
A
Singular
Plural
M addendum
addenda
man
men
alga
algae
matrix
matrices
alumna
alumnae
means
means
alumnus
alumni
medium
media
analysis
analyses
memorandum memoranda
antenna
antennas,antennae antennas,antennae
millennium
millenniums,milennia millenniums,milennia
apparatus
apparatuses
moose
moose
appendix
appendices,appendixes appendices,appendixes
mosquito
mosquitoes
axis
axes
mouse
mice
B
N bacillus
bacilli
nebula
nebulae,nebulas nebulae,nebulas
bacterium
bacteria
neurosis
neuroses
basis
bases
nucleus
nuclei
beau
beaux
bison
bison
oasis
oases
buffalo
buffalos,buffaloes buffalos,buffaloes
octopus
octopi,octopuses octopi,octopuses
bureau
bureaus
ovum
ova
bus
busses,buses busses,buses
ox
oxen
C
O
P cactus
cactuses,cacti cactuses,cacti
paralysis
paralyses
calf
calves
parenthesis
parentheses
child
children
person
people
corps
corps
phenomenon phenomena
corpus
corpora,corpuses corpora,corpuses
potato
potatoes
crisis
crises
criterion
criteria
radius
radii,radiuses radii,radiuses
curriculum
curricula
scarf
scarfs,scarves scarfs,scarves
D
R S
datum
data
self
selves
deer
deer
series
series
die
dice
sheep
sheep
dwarf
dwarfs,dwarves dwarfs,dwarves
shelf
shelves
diagnosis
diagnoses
scissors
scissors
E
species
species
echo
echoes
stimulus
stimuli
elf
elves
stratum
strata
ellipsis
ellipses
syllabus
syllabi,syllabuses syllabi,syllabuses
embargo
embargoes
symposium
symposia,symposiums symposia,symposiums
emphasis
emphases
synthesis
syntheses
erratum
errata
synopsis
synopses
F
T fireman
firemen
tableau
tableaux
fish
fish,fishes fish,fishes
that
those
focus
focuses
thesis
theses
foot
feet
thief
thieves
formula
formulas
this
these
fungus
fungi,funguses fungi,funguses
tomato
tomatoes
tooth
teeth
torpedo
torpedoes
vertebra
vertebrae
G genus
genera
goose
geese
V
H half
halves
veto
vetoes
hero
heroes
vita
vitae
hippopotamus hippopotami,hippopotamuses hippopotami,hippopotamuses
W
hoof
hoofs,hooves hoofs,hooves
watch
watches
hypothesis
hypotheses
wife
wives
wolf
wolves
woman
women
zero
zeros,zeroes zeros,zeroes
I index
indices,indexes indices,indexes
K
Z knife
knives
leaf
leaves
life
lives
loaf
loaves
louse
lice
L