threesome.
A group of three people or things.
Meaning & usage
A group of three people or things.
An instance of sexual activity involving three people.
Where this word comes from
Etymology tree Proto-Indo-European *tréyes Proto-Germanic *þrīz Proto-West Germanic *þrīʀ Old English þrī Middle English thre English three Proto-Indo-European *sem- Proto-Indo-European *-os Proto-Indo-European *-ós Proto-Indo-European *-ós Proto-Indo-European *somHós Proto-Germanic *samaz Proto-Germanic *-samaz Proto-West Germanic *-sam Old English -sum Middle English -som English -some English threesome From three + -some.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.