一夜情

yīyèqíng
one night stand

CEDICT

one-night stand

Wiktionary

與未建立感情基礎的人發生的合意性行為

維基詞典

Entry Composition

1 一夜 yīyè
  1. (literal, figurative) overnight
  2. overnight
2 情 qíng
  1. (bound form) feelings; emotion; sentiment; passion
  2. (bound form) situation; condition