Irregular plural nouns

Irregular plural nouns are nouns that do not form the plural by adding -s or -es, as regular nouns do. Some examples of irregular plural nouns include: Person/People Child/Children Man/Men Woman/Women Goose/Geese Tooth/Teeth Fish/Fish Ox/Oxen Sheep/Sheep Deer/Deer Moose/Moose Cactus/Cacti Foot/Feet Mouse/Mice Aircraft/Aircraft