ㄊㄨㄥsītōng

  1. 私下裡勾結 私通密謀造反」。

  2. 通姦 私通違反道德風俗」。

to have secret ties with, to be in covert communication with (the enemy etc)​, to engage in an illicit sexual relationship, adultery
Adultère
geheime Liaison (S)​, Innigkeit (S)​