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Definition of theirs

theirs

/ðɛərz/
theirs
Adjective:their
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theirs Lexical Profile

theirs Game Scores & Validity

• pronoun

1

Something that belongs to or is associated with them (two or more people or things previously mentioned or easily identified).

Example

"Our car was parked in the driveway, while theirs was left on the street."

2

Something that belongs to or is associated with a single person of unspecified, unknown, or non-binary gender.

Example

"Someone left a laptop in the conference room, so I placed theirs at the front desk."

Synonyms
View all synonyms for theirs
Antonyms
View all antonyms for theirs

Word Nuance & Usage

Like other absolute possessive pronouns (such as 'ours', 'yours', and 'hers'), 'theirs' is never written with an apostrophe; forms such as 'their's' or 'theirs'' are nonstandard spelling errors.

• Rhymes for theirs

• Nearby Words

thee
theft
their
theirs
theism
theist
theistic

Word Origin & Etymology

Formed in Middle English around 1300 from the possessive determiner 'their' (borrowed from Old Norse 'þeira', meaning 'of them') plus the genitive suffix '-s', by analogy with 'ours' and 'yours'.

Cite this Entry

Wordmom. (2026). Definition of Theirs. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/theirs
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