出轨 Traditional form: 出軌 Pinyin (reading): chūguǐ Definitions: to be derailed; to go off the rails (fig.) to overstep the bounds (fig.) to have an extramarital affair Characters: 出 - to go out, to send out; stand; produce 轨 - track, rut, path Traditional characters: 出 - to go out, to send out; stand; produce 軌 - track, rut, path