13 Irregular Plural Nouns


Nouns refer to a person, place, thing, event, substance or quality.

Plural form is used to indicate that there is more than one person, animal, place or thing. Some nouns don’t follow the rules, they’re irregular, so their plural is formed differently.


Nouns with irregular plural form do not become plural by adding -s or -es. There are no rules explaining how the plurals of these nouns are formed. The most commonly used nouns with irregular plural forms are:

Singular Plural
child children
foot feet
man men
mouse mice
person people
tooth teeth
woman women


  • ChildWe have three children.
  • FootMy feet are sore.
  • ManThere are some men outside the house.
  • MouseI found three mice in the barn.
  • PersonThey are such nice people.
  • ToothHe lost two teeth yesterday.
  • WomanThey are very beautiful women.


The irregular plurals are used in the same way as the regular ones, but they are formed differently.


There is no rule for the formation of irregular plural nouns, so you have to learn them by heart.

The most commonly used are: child ⇒ children, foot ⇒ feet, man ⇒ men, person ⇒ people, woman ⇒ women

For example
— “An ox.” ⇒ “Three oxen.” / “Three oxes.”
— “There is only one goose in the street.” ⇒ “There are five geese in the street.”

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