demoniacal

demoniacal
    adj 1: frenzied as if possessed by a demon; "the soldier was
           completely amuck"; "berserk with grief"; "a berserk
           worker smashing windows" [syn: {amuck}, {amok},
           {berserk}, {demoniac}, {demoniacal}, {possessed(p)}]
    

Demoniac \De*mo"ni*ac\, Demoniacal \Dem`o*ni"a*cal\ (?; 277), a.
   [L. daemoniacus, fr. daemon; cf. F. d['e]moniaque. See
   {Demon}.]
   1. Pertaining to, or characteristic of, a demon or evil
      spirit; devilish; as, a demoniac being; demoniacal
      practices.
      [1913 Webster]

            Sarcastic, demoniacal laughter.       --Thackeray.
      [1913 Webster]

   2. Influenced or produced by a demon or evil spirit; as,
      demoniac or demoniacal power. "Demoniac frenzy." --Milton.
      [1913 Webster]

   3. resembling or suggesting possession by a demon; as,
      demoniac energy.
      [WordNet 1.5]

   4. in a murderous frenzy as if possessed by a demon.

   Syn: amuck, amok, berserk, demoniac, possessed(predicate).
        [WordNet 1.5]
    

101 Moby Thesaurus words for "demoniacal":
      Draconian, Mephistophelian, Tartarean, abandoned, amok, animal,
      anthropophagous, atrocious, barbaric, barbarous, beastly,
      bellowing, berserk, bestial, bloodthirsty, bloody, bloody-minded,
      brutal, brutalized, brute, brutish, cannibalistic, carried away,
      cruel, cruel-hearted, cursed, damnable, delirious, demoniac,
      demonic, demonish, demonlike, devil-like, devilish, diabolic,
      distracted, ecstatic, enraptured, execrable, fell, feral,
      ferocious, fiendish, fiendlike, fierce, frantic, frenzied,
      fulminating, furious, ghoulish, haggard, hellborn, hellish,
      hog-wild, howling, hysterical, in a transport, in hysterics,
      infernal, inhuman, inhumane, intoxicated, mad, madding, maniac,
      murderous, ogreish, orgasmic, orgiastic, possessed, rabid, raging,
      ramping, ranting, raving, ravished, roaring, running mad, ruthless,
      sadistic, sanguinary, sanguineous, satanic, savage, sharkish,
      slavering, storming, subhuman, transported, truculent, unchristian,
      uncivilized, uncontrollable, ungodly, unhuman, vicious, violent,
      wild, wild-eyed, wild-looking, wolfish