Adjective demoniac has 2 senses
- amuck, amok, berserk, demoniac, demoniacal, possessed - in a murderous frenzy as if possessed by a demon; "the soldier was completely amuck"; "berserk with grief"; "a berserk worker smashing windows"
Antonym: sane (indirect, via insane)
- demoniac, demoniacal - resembling or suggesting possession by a demon; "demoniac energy"; "a demoniacal fit"
Antonym: unagitated (indirect, via agitated)
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Noun demoniac has 1 sense
- demoniac - someone who acts as if possessed by a demon
--1 is a kind of monster, fiend, devil, demon, ogre
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