inhuman

from WordNet (r) 3.0 (2006)
inhuman
    adj 1: without compunction or human feeling; "in cold blood";
           "cold-blooded killing"; "insensate destruction" [syn:
           {cold}, {cold-blooded}, {inhuman}, {insensate}]
    2: belonging to or resembling something nonhuman; "something
       dark and inhuman in form"; "a babel of inhuman noises"
    
from The Collaborative International Dictionary of English v.0.48
Inhuman \In*hu"man\, a. [L. inhumanus: cf. F. inhumain. See
   {In-} not, and {Human}.]
   [1913 Webster]
   1. Destitute of the kindness and tenderness that belong to a
      human being; cruel; barbarous; savage; unfeeling; as, an
      inhuman person or people.
      [1913 Webster]

   2. Characterized by, or attended with, cruelty; as, an
      inhuman act or punishment.

   Syn: Cruel; unfeeling; pitiless; merciless; savage;
        barbarous; brutal; ferocious; ruthless; fiendish.
        [1913 Webster]
    
from Moby Thesaurus II by Grady Ward, 1.0
80 Moby Thesaurus words for "inhuman":
      Draconian, Tartarean, animal, anthropophagous, atrocious, barbaric,
      barbarous, beastly, bestial, bloodthirsty, bloody, bloody-minded,
      brutal, brutalized, brute, brutish, callous, cannibalistic,
      cold-blooded, cruel, cruel-hearted, demoniac, demoniacal, demonic,
      demonish, demonlike, devil-like, devilish, diabolic, diabolical,
      fell, feral, ferine, ferocious, fiendish, fiendlike, fierce,
      ghoulish, heartless, hellish, implacable, infernal, inhumane,
      insensitive, kill-crazy, malicious, malign, malignant, merciless,
      murderous, noncivilized, ogreish, pitiless, relentless, ruthless,
      sadistic, sanguinary, sanguineous, satanic, savage, severe,
      sharkish, slavering, subhuman, tameless, truculent, unchristian,
      uncivilized, uncompassionate, unfeeling, ungentle, unhuman, unkind,
      unkindly, unrelenting, unsympathetic, untamed, vicious, wild,
      wolfish

    

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