Found 2 items, similar to detestably.
English → English (WordNet) Definition: detestably detestably adv : in an offensive and hateful manner; “I don't know anyone who could have behaved so abominably” [syn: repulsively, abominably, odiously]
English → English (gcide) Definition: Detestably Detestably \De*test"a*bly\, adv. In a detestable manner. [1913 Webster]