demoniac

demoniac
    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)}]
    n 1: someone who acts as if possessed by a demon
    

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]
    

Demoniac \De*mo"ni*ac\, n.
   1. A human being possessed by a demon or evil spirit; one
      whose faculties are directly controlled by a demon.
      [1913 Webster]

            The demoniac in the gospel was sometimes cast into
            the fire.                             --Bates.
      [1913 Webster]

   2. (Eccl. Hist.) One of a sect of Anabaptists who maintain
      that the demons or devils will finally be saved.
      [1913 Webster]
    

35 Moby Thesaurus words for "demoniac":
      aliene, bedlamite, borderline case, crackbrain, crackpot, crazed,
      crazy, dement, demonic, devilish, diabolic, energumen, fanatic,
      fired, flake, fou, idiot, insane, inspired, kook, loon, loony,
      lunatic, madman, maniac, meshuggenah, noncompos, nut, phrenetic,
      raving lunatic, satanic, screwball, serpentine, unhallowed,
      weirdo