knavish vs foxy

knavish and foxy both are adjectives.

Word	Noun	Adjective	Verb	Adverb
knavish	No	Yes	No	No
foxy	No	Yes	No	No

As adjectives, knavish and foxy are synonyms defined as:

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

knavish (adjective)	foxy (adjective)
marked by skill in deception	marked by skill in deception