Countable Nouns - Irregular Plurals



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


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