sly vs tricky

sly and tricky both are adjectives.

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

As adjectives, sly and tricky are synonyms defined as:

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

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