这类成语不胜枚举。如:
“假仁假义”:指“假装的仁义道德”;
“两面三刀”:比喻阴险狡猾,当面一套,背后一套;
“笑里藏刀”:形容对人外表和气,内心却阴险毒辣;
“虚情假意”:装着对人热情,不是真心实意。