slyly vs artfully

slyly and artfully both are adverbs.

Word	Noun	Adjective	Verb	Adverb
slyly	No	No	No	Yes
artfully	No	No	No	Yes

As adverbs, slyly and artfully are synonyms defined as:

Other synonyms of slyly include craftily, cunningly, foxily, knavishly, trickily.

slyly (adverb)	artfully (adverb)
in an subtle, cunning manner	in a manner exhibiting art or skill
	in a disingenuous manner
	in an subtle, cunning manner