theirs

pronoun

ˈt͟herz 

singular or plural in construction

1

: that which belongs to them

—used without a following noun as a pronoun equivalent in meaning to the adjective their

2

: his or hers : his, hers

—used with an indefinite third person singular antecedent

I will do my part if everybody else will do theirs

Word History

First Known Use

14th century, in the meaning defined at sense 1

Video

There, They're, Their

There, there. We'll sort it out.

Kids Definition

theirs

pronoun

ˈt͟he(ə)rz 

ˈt͟ha(ə)rz

: their one : their ones

the house is theirs

these books are theirs

theirs are on the table