rottenly vs atrociously

rottenly and atrociously both are adverbs.

Word	Noun	Adjective	Verb	Adverb
rottenly	No	No	No	Yes
atrociously	No	No	No	Yes

As adverbs, rottenly and atrociously are synonyms defined as:

Other synonyms of rottenly include abominably, abysmally, awfully, terribly.

rottenly (adverb)	atrociously (adverb)
in a terrible manner	in a terrible manner
	to an extravagant or immoderate degree