The Collaborative International Dictionary of English v.0.48:
Unworthy \Un*wor"thy\, a. Not worthy; wanting merit, value, or fitness; undeserving; worthless; unbecoming; -- often with of. -- Un*wor"thi*ly, adv. -- Un*wor"thi*ness, n. [1913 Webster]WordNet (r) 3.0 (2006):
unworthily adv 1: in an unworthy manner