brute

brute (http://definr.com/brute)

     adj : resembling a beast; showing lack of human sensibility;
           "beastly desires"; "a bestial nature"; "brute force";
           "a dull and brutish man"; "bestial treatment of
           prisoners" [syn: beastly, bestial, brute(a), brutish]
     n 1: a cruelly rapacious person [syn: beast, wolf, savage,
          wildcat]
     2: a living organism characterized by voluntary movement [syn:
        animal, animate being, beast, creature, fauna]