SLIPPERY

[adjective] - wet, smooth or oily so that it slides easily or causes something to slideslippery soapIt had been raining and the road was slippery.(informal disapproving) A person who is slippery is one you do not feel you can trust.He's as slippery as an eel - you can never get a straight answer out of him.He's a slippery customer (= person), that Tim, I've never felt comfortable with him.A slippery slope is a bad situation or habit which, after it has started, is likely to get very much worse.You're on a/It's a slippery slope once you start drinking alcohol on your own!