What does threesome mean?
Threesome most famously denotes sexual activity involving three participants, usually described as a three-person or three-way encounter. In its older and still fully ordinary sense, it means any group of three: a trio of golfers, a threesome of friends, or a three-player team. The word can also function attributively, as in “a threesome relationship,” referring to an intimate relationship involving three people; that use does not necessarily specify the nature of the relationship. In nonsexual contexts, “threesome” is generally neutral, though using it for a group of three can sound slightly conversational rather than formal. In sexual contexts, the term is informal, but it does not itself imply that the participants lack consent or that their conduct is casual. Its interest lies in this blend of literal number and social association: the same word that can describe three golfers at the tee can, in another register, describe three people sharing intimacy.
A group or set of three people or things; informally, an instance of sexual activity involving three participants.
"The neighborhood committee was a threesome of residents who met every Wednesday."
The sexual sense is informal and normally assumes consensual participation.
Consisting of or involving three people or participants.
"They maintained a threesome relationship that allowed each person equal time with the others."
This form is especially common before words such as relationship and encounter.
The regular plural adds -s and can refer to groups of three or, in the informal sexual sense, separate instances of activity involving three participants.
"Several threesomes had been booked for the evening."
A threesome can be a trio of golfers—or, in another register, three people sharing intimacy.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does threesome come from?
Threesome combines three with the suffix -some, which forms nouns of this type in words such as twosome and foursome. Its original sense referred simply to a group of three and dates from the medieval period; the familiar sexual sense is a much later development. The numeral three belongs to the Germanic family of words that includes the archaic form threo and the adverb thrice.
Related word forms
How threesome is actually used
The group-of-three sense is ordinary and broadly neutral, although “threesome” can sound slightly more conversational than “trio” or “group of three.” The sexual sense is informal and refers to consensual activity involving three participants; it should not be assumed to describe any particular sexual roles or practices.