slippery          
adjective uk/ˈslɪp.ər.i/ us/ˈslɪp.ɚ.i/
C1 湿滑的,容易打滑的
If something is slippery, it is wet or smooth so that it slides easily or causes something to slide.
  slippery soap 湿滑的肥皂 
 a slippery floor 湿滑的地板 
 The road was wet and slippery. 道路又湿又滑。 
  informal disapproving狡猾的,滑头的 
Someone who is slippery cannot be trusted.
  He's as slippery as an eel - you can never get a straight answer out of him. 他非常滑头——你永远无法从他嘴里得到直率的回答。 
 He's a slippery customer (= person), and I've never felt comfortable with him. 他是个狡猾的家伙,和他在一起我总是感到不舒服。 
 See also: slippery slope