TRICKY
crafty, cunning, dodgy, foxy, guileful, knavish, slick, sly, tricksy, tricky, wily
(adjective) 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 Dick”; “a wily old attorney”
catchy, tricky
(adjective) having concealed difficulty; “a catchy question”; “a tricky recipe to follow”
slippery, tricky
(adjective) not to be trusted; “how extraordinarily slippery a liar the camera is”- James Agee
Source: WordNet® 3.1
Etymology
Adjective
tricky (comparative trickier, superlative trickiest)
hard to deal with, complicated
adept at using deception
(colloquial, slang) Relating to or associated with a prostitution trick
Source: Wiktionary
Trick"y, a.
Definition: Given to tricks; practicing deception; trickish; knavish.
Source: Webster’s Unabridged Dictionary 1913 Edition