Word Classes
Singular / Plural

Singular Plural

Regular Nouns

Most singular nouns form the plural by adding -s.

Examples

SingularPlural
boatboats
househouses
catcats
riverrivers

A singular noun ending in -s, -x, -z, -ch, -sh makes the plural by adding -es.

Examples

SingularPlural
pennypennies
spyspies
babybabies
daisydaisies

Irregular Nouns

There are some irregular noun plurals. The most common ones are listed below.

Examples

SingularPlural
womanwomen
manmen
childchildren
personpeople
toothteeth
footfeet
leafleaves
mousemice
louselice
goosegeese
halfhalves
knifeknives
wifewives
lifelives
elfelves
loafloaves
tomatotomatoes
cactuscacti
focusfoci
fungusfungi
nucleusnuclei
syllabussyllabi/syllabuses
analysisanalyses
diagnosisdiagnoses
oasisoases
thesistheses
crisiscrises
phenomenonphenomena
criterioncriteria
datumdata

Some nouns have the same form in the singular and the plural.

Examples

SingularPlural
sheepsheep
fishfish
deerdeer
speciesspecies
aircraftaircraft

Subject-Verb Agreement of Irregular Nouns

Plural noun with a singular verb

Some nouns have a plural form but take a singular verb.

Examples

  • news
    • The news is at 6.30 p.m.
  • athletics
    • Athletics is good for young people.
  • linguistics
    • Linguistics is the study of language.
  • darts
    • Darts is a popular game in England.
  • billiards
    • Billiards is played all over the world.

Plural noun with a plural verb

Some nouns have a fixed plural form and take a plural verb. They are not used in the singular, or they have a different meaning in the singular. Nouns like this include: trousers, jeans, glasses, savings, thanks, steps, stairs, customs, congratulations, tropics, wages, spectacles, outskirts, goods, wits

Examples

  • trousers
    • My trousers are too tight.
  • jeans
    • Her jeans are black.
  • glasses
    • Those glasses are his.