ABOMINABLY
terribly, atrociously, awfully, abominably, abysmally, rottenly
(adverb) in a terrible manner; “she sings terribly”
detestably, repulsively, abominably, odiously
(adverb) in an offensive and hateful manner; “I don’t know anyone who could have behaved so abominably”
Source: WordNet® 3.1
Etymology
Adverb
abominably (comparative more abominably, superlative most abominably)
In an abominable manner; very odiously; detestably. [First attested around 1350 to 1470.]
Source: Wiktionary
A*bom"i*na*bly, adv.
Definition: In an abominable manner; very odiously; detestably.
ABOMINABLE
A*bom"i*na*ble, a. Etym: [F. abominable. L. abominalis. See
Abominate.]
1. Worthy of, or causing, abhorrence, as a thing of evil omen; odious
in the utmost degree; very hateful; detestable; loathsome; execrable.
2. Excessive; large; -- used as an intensive. [Obs.]
Note: Juliana Berners . . . informs us that in her time [15th c.],
"abomynable syght of monkes" was elegant English for "a large company
of friars." G. P. Marsh.
Source: Webster’s Unabridged Dictionary 1913 Edition