List 1 - Singular and Plural Nouns


Singular  Plural 
criterion criteria
dormouse dormice
foot feet
goose geese
louse lice
man men
mouse mice*
phenomenon phenomena
tooth teeth
woman women
* For computer mouse, the plural is mice or mouses.


By adding -en/-ren

Singular  Plural 
ox oxen
child children


Singular  Plural 
dwarf dwarfs/dwarves
handkerchief handkerchiefs/ves
hoof hoofs/hooves
scarf scarfs/scarves
turf turfs/turves
wharf wharfs/wharves