-s
nebo -es
cat -> cats
girl -> girls
box -> boxes
-f
nebo -fe
se do množného čísla převedou změnou f -> v
knife -> knives
elf -> elves
wife -> wives
hoof -> hooves
etc.
man -> men
woman ->woman
child ->children
foot -> feet
tooth ->teeth
goose -> geese
potato -> potatoes
tomato -> tomatoes
volcano -> volcanoes
mouse ->mice
louse->lice // vši
person -> people
ox -> oxen // volové
sheep -> sheep
deer -> deer
fish -> fish
-on
nebo -um
se obvykle mění na -a
phenomenon -> phenomena
bacterium -> bacteria
datum -> data
medium -> media
-us
se obvykle mění na -i
cactus -> cacti
octopus ->octopi
a -> ae
antenna ->antennae
is -> es
crisis ->crises
ix-> ices
appendix ->appendices
eau -> eaux
bureau -> bureaux