cannibalic

from WordNet (r) 3.0 (2006)

cannibalic
    adj 1: marked by barbarity suggestive of a cannibal; rapaciously
           savage

from The Collaborative International Dictionary of English v.0.48

cannibalic \cannibalic\ adj.
   resembling a beast; showing lack of human sensibility.

   Syn: beastly, bestial, brute(prenominal), brutish.
        [WordNet 1.5] cannibalise