Irregula Plural

SINGULAR	PLURAL
alumnus	alumni
analysis	analyses
antenna	antennae/antennas
appendix	appendices
axis	axes
bacterium	bacteria
basis	bases
beau	beaux
bureau	bureaux/bureaus
child	children
corpus	corpora/corpuses
crisis	crises
criterion	criteria
curriculum	curricula
datum	data
deer	deer
diagnosis	diagnoses
ellipsis	ellipses
fish	fish
focus	foci/focuses
foot	feet
formula	formulae/formulas
fungus	fungi/funguses
genus	genera
goose	geese
hypothesis	hypotheses
index	indices/indexes
louse	lice
man	men
matrix	matrices
means	means
medium	media
mouse	mice
nebula	nebulae
nucleus	nuclei
oasis	oases
ox	oxen
paralysis	paralyses
parenthesis	parentheses
phenomenon	phenomena
radius	radii
series	series
sheep	sheep
species	species
stimulus	stimuli
stratum	strata
synthesis	syntheses
synopsis	synopses
tableau	tableaux
thesis	theses
tooth	teeth
vertebra	vertebrae
vita	vitae
woman	women