2ADJ-GRADED 滑头的;靠不住的;狡猾的 You can describe someone as slippery if you think that they are dishonest in a clever way and cannot be trusted. 滑头的;靠不住的;狡猾的 [disapproval]
He is a slippery customer, and should be carefully watched.
他是一个狡猾的顾客,要小心提防。
3PHRASE 滑向深渊的道路 If someone is on a slippery slope, they are involved in a course of action that is difficult to stop and that will eventually lead to failure or trouble. 滑向深渊的道路
The company started down the slippery slope of believing that they knew better than the customer.