成姦 [－奸]

Jyutping sing4 gaan1
Pinyin chéng jiān

Definitions (Wiktionary)
  1. verb
    to commit adultery
    (syn.) 私通, 偷欢, 偷歡, 私會, 通奸, 出軌, 幽會, 私会, 通姦, 做頭髮, 幽会, 勾搭, 偷腥, 出轨, 做头发, 偷情, 苟合