出处：按学科分类—语言、文字 中国对外翻译出版公司《汉英成语词典》第170页（228字）
指非常奸诈狡猾的人，例明朝的严嵩身居高位，却老奸巨猾，专权用事，不知害死了多少人。
Yan Song was a high official of the Ming Dynasty．He was acrafty old scoundrel and with his power，no one knows how many people he killed．