We found 27 dictionaries that define the word demoniac:

General (21 matching dictionaries)

1. demoniac: Merriam-Webster
2. demoniac: Oxford Learner's Dictionaries
3. demoniac: American Heritage Dictionary of the English Language
4. demoniac: Collins English Dictionary
5. demoniac: Vocabulary.com
6. Demoniac, demoniac: Wordnik
7. demoniac: Cambridge Advanced Learner's Dictionary
8. demoniac: Wiktionary
9. demoniac: Webster's New World College Dictionary, 4th Ed.
10. demoniac: The Wordsmyth English Dictionary-Thesaurus
11. demoniac: Infoplease Dictionary
12. Demoniac, demoniac: Dictionary.com
13. Demoniac: Wikipedia, the Free Encyclopedia
14. Demoniac: Online Plain Text English Dictionary
15. demoniac: Webster's Revised Unabridged, 1913 Edition
16. demoniac: Rhymezone
17. Demoniac: AllWords.com Multi-Lingual Dictionary
18. demoniac: Webster's 1828 Dictionary
19. demoniac: FreeDictionary.org
20. demoniac: Mnemonic Dictionary
21. demoniac: TheFreeDictionary.com

Art (1 matching dictionary)

22. -demoniac: A Cross Reference of Latin and Greek Elements

Business (1 matching dictionary)

23. demoniac: Legal dictionary

Computing (1 matching dictionary)

24. demoniac: Encyclopedia

Medicine (1 matching dictionary)

25. online medical dictionary (No longer online)

Religion (1 matching dictionary)

26. Glossary of spiritual and religious terms (No longer online)

Slang (1 matching dictionary)

27. Demoniac: Urban Dictionary

(Note: See demoniacally as well.)

Definitions from Wiktionary (demoniac) ▸ adjective:  Possessed or controlled by a demon. ▸ adjective:  Of or pertaining to demons; demonic. ▸ noun:  Someone who is possessed by a demon. Similar: possessed, demoniacal, berserk, insane, amuck, amok, agitated, demonic, demonian, dæmoniacal, more... Opposite: angelic, angelical, angelicality Types: satanic, demonic, diabolical, hellish, fiendish, more... Phrases: Exorcism of the Gerasene demoniac, more... Adjectives: gerasene, dumb, blind, poor, healed, most, former, pretended, certain, mute, single ▸ Words similar to demoniac ▸ Usage examples for demoniac ▸ Idioms related to demoniac ▸ Wikipedia articles (New!) ▸ Popular adjectives describing demoniac ▸ Popular nouns described by demoniac ▸ Words that often appear near demoniac ▸ Rhymes of demoniac ▸ Invented words related to demoniac