The Collaborative International Dictionary of English v.0.48:
Perversely \Per*verse"ly\, adv. In a perverse manner. [1913 Webster]WordNet (r) 3.0 (2006):
perversely adv 1: deliberately deviant; "his perversely erotic notions" 2: in a contrary disobedient manner [syn: perversely, contrarily, contrariwise]