老奸巨猾（老姦巨猾）　

◎ 老奸巨猾 lǎojiān-jùhuá

[crafty old scoundrel;deep old file;shrewd and crafty; great hypocrite; old hand at trickery and deception; sly wily old fox] 深历世故,十分奸诈狡猾的人

老奸巨猾,匿身州悬,舞法扰民。——《宋史·食货志》