偷香竊玉 [－－窃－]

Jyutping tau1 hoeng1 sit3 juk6
Pinyin tōu xiāng qiè yù

Definitions (CC-CEDICT)
  1. lit. stolen scent, pilfered jade (idiom); philandering
  2. secret illicit sex
Definitions (Wiktionary)
  1. noun, idiomatic
    love affair; philandering, secret illicit sex
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）