This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
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adj. Possessed, produced, or influenced by a demon: demoniac creatures.

adj. Of, resembling, or suggestive of a devil; fiendish: demoniac energy; a demoniacal fit.

n. One who is or seems to be possessed by a demon.

adj. possessed or controlled by a demon.

adj. Of or pertaining to demons; demonic.

n. One who is possessed or controlled by a demon.

adj. Pertaining to, or characteristic of, a demon or evil spirit; devilish

adj. Influenced or produced by a demon or evil spirit.

adj. resembling or suggesting possession by a demon.

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

n. A human being possessed by a demon or evil spirit; one whose faculties are directly controlled by a demon.

n. One of a sect of Anabaptists who maintain that the demons or devils will finally be saved.

Pertaining to a demon or spirit.

Produced by demons; influenced by demons.

Of the character of a demon; acting as if possessed by demons; wild; frantic; extremely wicked or cruel.

n. One who is supposed to be possessed by a demon; one whose volition and other mental faculties seem to be overpowered. restrained, or disturbed in their regular operation by an evil spirit; specifically, a lunatic.

n. [capitalized] One of a section of the Anabaptists who maintained that, the devils would ultimately be saved.

adj. frenzied as if possessed by a demon

n. someone who acts as if possessed by a demon

"He has deemed himself a failure and largely abandoned literature, but Jed's portrait of him captures his bygone intensity—"he appears to be in a trance, possessed by a fury that some have not hesitated to describe as demoniac.""

insane    demoniacal   

monster    ogre    demon    fiend    devil   

devilish    amuck    amok    berserk    possessed   

demonic    fiendish    wolfish    diabolic    maniacal