madly vs devilishly

madly and devilishly both are adverbs.

Word	Noun	Adjective	Verb	Adverb
madly	No	No	No	Yes
devilishly	No	No	No	Yes

As adverbs, madly and devilishly are synonyms defined as:

Other synonyms of madly include deadly, deucedly, insanely.

madly (adverb)	devilishly (adverb)
(used as intensives) excessively	in a playfully devilish manner
in an insane manner	(used as intensives) excessively
in an ungovernable manner	as a devil; in an evil manner