English Reference

Word

theirs

US/ˈðɛɹz/

UK/ðˈeəz/

Definitions

01belonging to them

A2 · Elementary

pron. the thing or things that belong to 'them'.

pron. the possessive pronoun corresponding to the third-person plural 'they', functioning as a full noun phrase.

“We have our tickets, and they have theirs.”

“While our department met its quarterly targets, the marketing team struggled to reach theirs due to unforeseen budget cuts.”

Usage

This pronoun stands alone and never comes before a noun; use 'their' if a noun follows.

Pitfall

The blue car is their's.

The blue car is theirs.

Possessive pronouns like 'theirs', 'ours', and 'yours' never take an apostrophe.

02their home

B1 · Intermediate Informal

pron. the house or home where a group of people live.

pron. an elliptical construction referring to the residence or home of the third-person plural subjects.

“We're going over to theirs for dinner on Saturday night.”

“After the concert ended, the whole group headed back to theirs to continue the celebration in a more private setting.”

Usage

Commonly used with prepositions like 'at' or 'to' in British and Australian English.

Synonyms

their placetheir house

Collocations

Common phrases and expressions where native English speakers use the word “theirs” in context.

Verb

01. became theirs

“After the contract was signed, the house finally became theirs.”

verb + noun

02. is theirs

“We have our tickets, and this one is theirs.”

verb + noun

03. keep theirs

“I'll put my bag here, but they should keep theirs in the locker.”

verb + noun

Preposition

04. like theirs

“Our garden is small, but I would love a big one like theirs.”

prep + noun

05. of theirs

“A friend of theirs told us that the party was cancelled.”

prep + noun

06. with theirs

“We compared our results with theirs to see if we made any mistakes.”

prep + noun

Etymology

From Middle English theires, attested since the 1300s. Equivalent to their + -s (compare -'s); formed by analogy to his. Displaced theirn (from Middle English theiren, formed by analogy to mine, thine) in standard speech.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Related words

Grammar

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B1 PreliminaryIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.4.0–5.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 3.0–3.544–71TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.550–784EikenEikenTest in Practical English ProficiencyThe English proficiency test from the Eiken Foundation of Japan, widely taken by Japanese students. Grades run from 5 to 1, with Pre-1 and Pre-2 between them.Grade 2
Frequency
Frequent
Level
B1 · IntermediateOxford
Updated

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