Theirs vs. Their's in English Grammar

Which One Is Correct?

Which one do you think is correct? Here, we will discuss the third-person plural possessive pronoun in the English language.

Theirs vs. Their's

Can We Use Their's?

You should never write "theirs" with an apostrophe. "Their's" is incorrect in standard English, so you cannot use it.

What Causes This Mistake?

Especially with those possessive pronouns, like hers and theirs that end in S already, you might instinctively add the apostrophe. But remember that it's wrong.

Theirs

Function 1: Possessive Pronoun

The third-person plural possessive pronoun in the English language is 'theirs'. It can be used to refer to something or someone belonging to or associated with others.

Theirs are the jackets with fur collars .

Function 2: Generic Pronoun

'Theirs' can be used instead of 'his or hers' to show that something belongs to a person without mentioning the gender of those people.

Students must prepare their applications and send in theirs by the end of the month .

of + possessive pronouns

Sometimes, to show belonging you can use the structure of 'of + possessive pronouns'.

He's a friend of theirs .

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