Definition of 'demoniac'
- someone who acts as if possessed by a demon
- 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 demoniacal possessed
- resembling or suggesting possession by a demon; "demoniac energy"; "a demoniacal fit"