wickedly

from WordNet (r) 3.0 (2006)

wickedly
    adv 1: in a wicked evil manner; "act wickedly"; "grin evilly"
           [syn: {wickedly}, {evilly}]

from The Collaborative International Dictionary of English v.0.48

Wickedly \Wick"ed*ly\, adv.
   In a wicked manner; in a manner, or with motives and designs,
   contrary to the divine law or the law of morality; viciously;
   corruptly; immorally.
   [1913 Webster]

         I have sinned, and I have done wickedly. --2 Sam. xxiv.
                                                  17.
   [1913 Webster]