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Adjective: demoniac  di'mow-nee,ak
  1. Frenzied, out of control
    "the soldier was completely demoniac";
    - amuck, amok, berserk, demoniacal, possessed
Noun: demoniac  di'mow-nee,ak
  1. Someone who acts as if possessed by a demon

Derived forms: demoniacs

See also: insane

Type of: demon, devil, fiend, monster, ogre

Encyclopedia: Demoniac