wily vs sly

wily and sly both are adjectives.

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

As adjectives, wily and sly are synonyms defined as:

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

wily (adjective)	sly (adjective)
marked by skill in deception	marked by skill in deception