| a. | 1. | Pertaining to, or characteristic of, a demon or evil spirit; devilish; |
| 2. | Influenced or produced by a demon or evil spirit; | |
| 3. | resembling or suggesting possession by a demon; | |
| 4. | in a murderous frenzy as if possessed by a demon. | |
| n. | 1. | A human being possessed by a demon or evil spirit; one whose faculties are directly controlled by a demon. |
| 2. | (Eccl. Hist.) One of a sect of Anabaptists who maintain that the demons or devils will finally be saved. |
| Noun | 1. | demoniac - someone who acts as if possessed by a demon |
| Adj. | 1. | demoniac - 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 - resembling or suggesting possession by a demon; "demoniac energy"; "a demoniacal fit" Synonyms: demoniacal |