abominably vs rottenly

abominably and rottenly both are adverbs.

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

As adverbs, abominably and rottenly are synonyms defined as:

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

abominably (adverb)	rottenly (adverb)
in a terrible manner	in a terrible manner
in an offensive and hateful manner