Synonyms for demoniac

Noun

1. demoniac, monster, fiend, devil, demon, ogre

usage: someone who acts as if possessed by a demon

Adjective

1. amuck, amok, berserk, demoniac, demoniacal, possessed(predicate), insane (vs. sane)

usage: in a murderous frenzy as if possessed by a demon; "the soldier was completely amuck"; "berserk with grief"; "a berserk worker smashing windows"

2. demoniac, demoniacal, agitated (vs. unagitated)

usage: resembling or suggesting possession by a demon; "demoniac energy"; "a demoniacal fit"