What is a thruple?

A romantic relationship between three people

A thruple is a polyamorous relationship between three people. It is considered a "progressive" alternative to the more conventional two-person relationship.

The term was coined by Internet users and became popular in the mid-2010s as a way to refer to a consensual relationship between three committed people. Members of thruples may be all-male, all-female, or varied. They may also include married couples and a GF or BF.

A thruple is not the same as a "Threesome" (3sum), which refers to a sexual encounter between three people that does not include any commitment. The name comes from the combination of "Three" and "Couple" and may also be spelled as "Throuple."


He floated the idea of being in a thruple with his gf and co-worker and now he's single.

Thruples can become complicated

Related Slang


Updated October 8, 2019

Thruple definition by

This page explains what the slang term "Thruple" means. The definition, example, and related terms listed above have been written and compiled by the team.

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