tricky vs sly

tricky and sly both are adjectives.

Word	Noun	Adjective	Verb	Adverb
tricky	No	Yes	No	No
sly	No	Yes	No	No

As adjectives, tricky and sly are synonyms defined as:

Other synonyms of tricky include crafty, cunning, dodgy, foxy, guileful, knavish, slick, tricksy, wily.

tricky (adjective)	sly (adjective)
marked by skill in deception	marked by skill in deception
having concealed difficulty
not to be trusted