Adjective
1. not to be trusted;
"how extraordinarily slippery a liar the camera is"- James Agee"they called Reagan the teflon president because mud never stuck to him"2. having concealed difficulty;
"a catchy question""a tricky recipe to follow"3. marked by skill in deception;
"cunning men often pass for wise""deep political machinations""a foxy scheme""a slick evasive answer""sly as a fox""tricky Dik""a wily old attorney"