murderously

from WordNet (r) 3.0 (2006)

murderously
    adv 1: as if bent on murder; "the huge dog bore down on them
           with bared fangs and barking murderously"
    2: in a murderous frenzy; "rioters running amuck and throwing
       sticks and bottles and stones" [syn: {amok}, {amuck},
       {murderously}]

from The Collaborative International Dictionary of English v.0.48

Murderous \Mur"der*ous\, a.
   Of or pertaining to murder; characterized by, or causing,
   murder or bloodshed; having the purpose or quality of murder;
   bloody; sanguinary; as, the murderous king; murderous rapine;
   murderous intent; a murderous assault. "Murderous coward."
   --Shak. -- {Mur"der*ous*ly}, adv.
   [1913 Webster]

   Syn: Bloody; sanguinary; bloodguilty; bloodthirsty; fell;
        savage; cruel.
        [1913 Webster]