OT3
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
One true threesome; a polyamorous ship involving three characters that is a personal favorite of a fan.
Register: slang
Where it’s used:
Used
American English
Examples
And you don't have to limit your favorite ship to two characters — if there's a third involved, they can be your OT3.
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “OT3” mean?
One true threesome; a polyamorous ship involving three characters that is a personal favorite of a fan.
Is “OT3” formal or informal?
OT3 is generally slang.