|1.||[ adjective ] resembling or suggesting possession by a demon|
"demoniac energy" "a demoniacal fit"
|2.||[ adjective ] in a murderous frenzy as if possessed by a demon|
|Synonyms:||amok berserk demoniacal possessed amuck|
"the soldier was completely amuck" "berserk with grief" "a berserk worker smashing windows"
|3.||[ noun ] someone who acts as if possessed by a demon|