English Reference

Word

threesome

Phoneticsthree·some, stress on the first syllable

US/ˈθɹisəm/

UK/θɹˈiːsʌm/

Countable noun

Definition

n. a group of three people who do something together. It is often used to describe three people having sex together, but it can also mean a group of three in sports or music.

n. a group of three people engaged in a joint activity. While frequently used to describe a sexual encounter involving three participants, it also applies to trios in golf or musical ensembles.

Examples

“The three friends formed a threesome for the golf tournament.”

“After their third partner joined the venture, the duo became a productive threesome that managed the firm effectively.”

“The narrative explores the shifting dynamics of a domestic threesome, tracing how the introduction of a third party destabilizes the original couple's long-standing emotional equilibrium.”

Examples

simple

“The three friends formed a threesome for the golf tournament.”

contextual

“After their third partner joined the venture, the duo became a productive threesome that managed the firm effectively.”

complex

“The narrative explores the shifting dynamics of a domestic threesome, tracing how the introduction of a third party destabilizes the original couple's long-standing emotional equilibrium.”

Usage

Commonly used in both casual social contexts and specific sexual contexts; the latter is the dominant modern association.

Etymology

From three + -some.

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

Related words

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.C2 ProficiencyIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.8.5–9.0TOEFL 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: 6.0114–120
Frequency
Frequent
Level
C2 · Proficiency
Updated

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