外遇

wàiyù
extramarital affair

CEDICT

extramarital relations; love affair

Wiktionary

有配偶而与人有超友谊关係，称为「外遇」。

重編國語辭典

指已婚夫妇或情侣中的一人与其他人发生亲密关係、情爱、性关係

維基詞典

Entry Composition

1 外 wài
  1. outside
  2. in addition
  3. foreign
  4. external
2 遇 yù
  1. (bound form) to encounter; to happen upon; to meet unplanned
  2. (bound form) to treat; to receive

Related entries

婚外情 hūnwàiqíng extramarital affair