abominably vs terribly

abominably and terribly both are adverbs.

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

As adverbs, abominably and terribly are synonyms defined as:

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

abominably (adverb)	terribly (adverb)
in a terrible manner	used as intensifiers
in an offensive and hateful manner	in a terrible manner