What Are Plural Nouns? Rules and Examples


A plural noun is a noun that refers to more than one person, place, thing, or idea. Most singular nouns are made plural by adding a suffix, usually –s or –es. For example, the singular noun dog takes the plural form dogs, as in three dogs. However, there are irregular plural nouns that take unique forms. 

Most singular nouns are made plural by simply putting an –s at the end. There are many different rules regarding pluralization depending on what letter a noun ends in. Irregular nouns do not follow plural noun rules, so they must be memorized or looked up in the dictionary.

What are plural nouns? 

A noun is plural when it represents two or more people, places, things, or ideas. You can identify most plural nouns because they end in –s or –es, although there are plenty of exceptions. In particular, irregular plural nouns each have their own special plural forms, such as child and its plural form, children

Plural nouns vs. singular nouns

English distinguishes grammatical nouns as either singular or plural. Singular nouns represent one of something. 

one car

a friend

this daisy

Plural nouns, on the other hand, represent two or more of something. 

five cars

a few friends

these daisies

You can tell the difference between most singular and plural nouns by how the word ends, except for irregular nouns. 

Plural nouns vs. possessive nouns

Possessive nouns are nouns that show ownership, usually with an –’s at the end. So if you had a friend named Marja and Marja owned a bike, you would write: 

Marja’s bike

Plural nouns are often confused with possessive nouns because both usually end in –s. However, the major difference between plural and possessive nouns is the apostrophe

possessive nouns have it, but plural nouns don’t (unless they’re plural possessive nouns). 

[singular] boss

[singular possessive] boss’s

[plural] bosses

[plural possessive] bosses’ 

How do plural nouns work?

To make a regular noun plural, you add –s or –es to the end, depending on the word’s ending. Sometimes, letters of the original word get changed to make the plural form, such as half and its plural form, halves. We explain which words get which suffixes in the next section. 

Irregular plural nouns are an exception. Each irregular plural noun has its own unique plural form, such as mouse and its plural, mice, or goose and its plural, geese

Most nouns can be turned into plural nouns, including collective nouns that represent groups. 

one team

two teams

However, mass nouns, also known as uncountable nouns or non-count nouns, like sand, don’t have plural forms, even when they represent multiple things. 

Plural noun rules

There are many plural noun rules, and because we use nouns so frequently when writing, it’s important to know all of them! The correct spelling of plurals usually depends on what letter the singular noun ends in.

1
To make regular nouns plural, add –
s to the end.

cat cats

househouses

2
If the singular noun ends in –
s, –ss, –sh, –ch, –x, or –z, add -es to the end to make it plural.

busbuses

trusstrusses

marshmarshes

lunchlunches

taxtaxes

blitzblitzes

3
In some cases, singular nouns ending in –
s or –z require that you double the –s or –z prior to adding the –es for pluralization.

classclasses

fezfezzes

4
If the noun ends with –
f or –fe, the f or –fe are often changed to –ve before adding the –s to form the plural version.

wifewives

wolf wolves

Exceptions:

roofroofs

beliefbeliefs

chefchefs

chiefchiefs

5
If a singular noun ends in –
y and the letter before the –y is a consonant, change the ending to –ies to make the noun plural.

citycities

puppy puppies

6
If the singular noun ends in –
y and the letter before the –y is a vowel, simply add an –s to make it plural.

rayrays

boyboys

7
If the singular noun ends in –
o, add –es to make it plural.

potatopotatoes

tomatotomatoes

Plural noun exceptions

photophotos

pianopianos

halohalos

gasgases (gasses is also acceptable but less common)

With the unique word volcano, you can apply the standard pluralization for words that end in –o or not. It’s your choice! Both of the following are correct:

volcanoes

volcanos

8
If the singular noun ends in –
us, the plural ending is frequently –i.

cactuscacti

focusfoci

9
If the singular noun ends in –
is, the plural ending is –es.

analysisanalyses

ellipsisellipses

10
If the singular noun ends in –
on, the plural ending is –a.

phenomenonphenomena

criterioncriteria

11
Some nouns don’t change at all when they’re pluralized.

sheepsheep

seriesseries

speciesspecies

deerdeer

You need to see these nouns in context to identify them as singular or plural. Consider the following sentence:

However, when it comes to fish, things can get a little complicated.

Plural noun rules for irregular nouns

Irregular nouns follow no specific rules, so it’s best to memorize these or look up the proper pluralization in the dictionary.

childchildren

goosegeese

manmen

womanwomen

toothteeth

footfeet

mousemice

personpeople

Plural noun FAQs

What is a plural noun?

A plural noun is the form of a noun used to show there is more than one person, place, thing, or idea. Most nouns simply add –s or –es to the end to become plural. 

What is an example of a plural noun?

Kids is the plural noun form of kid. Some nouns have an irregular plural form; for instance, the plural noun of child is children, not childs.

What is the difference between singular and plural nouns?

Singular nouns represent only one thing, but plural nouns represent more than one. If someone stands alone, we call them a person (singular), but if there’s more than one person, we call them people (plural).



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