one-night stand
One-night stand (noun) means a single sexual encounter with someone, with no intention on either side of seeing each other again. Example: “They met at a wedding and it was only ever meant to be a one-night stand.”
How to use one-night stand
Learner’s notesIn plain EnglishSleeping with someone once, with no plan to do it again.
Informal but not vulgar; acceptable in general conversation and journalism.
The phrase describes the encounter, not the person; you do not call someone 'a one-night stand' to their face without offence.
Trace the full origin ↓Fill the gap
Can you complete this real example?
They met at a wedding and it was only ever meant to be a _____.
Etymology
Originally theatrical, describing a show booked into a venue for a single night; the sexual sense developed from that image of a single engagement.