dehumanized, unhuman

from The Collaborative International Dictionary of English v.0.48

nonhuman \nonhuman\ adj.
   not human. Opposite of {human}. [Narrower terms: {anthropoid,
   anthropoidal, apelike}; {bloodless}; {dehumanized, unhuman};
   {grotesque, monstrous, unnatural}; {mechanical}]
   [WordNet 1.5]