[noun] someone who acts as if possessed by a demon
[adjective] in a murderous frenzy as if possessed by a demon; "the soldier was completely amuck"; "berserk with grief"; "a berserk worker smashing windows" Synonyms:amuck, amok, berserk, al, possessed
[adjective] resembling or suggesting possession by a demon; "demoniac energy"; "a demoniacal fit" Synonyms:al