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We found 41 dictionaries with English definitions that include the word maniac:
Click on the first link on a line below to go directly to a page where "maniac" is defined.

General (30 matching dictionaries)

1. maniac: Merriam-Webster.com [home, info]
2. -maniac, maniac: Oxford Learner's Dictionaries [home, info]
3. maniac: American Heritage Dictionary of the English Language [home, info]
4. -maniac, maniac: Collins English Dictionary [home, info]
5. maniac: Vocabulary.com [home, info]
6. maniac: Macmillan Dictionary [home, info]
7. Maniac, maniac: Wordnik [home, info]
8. maniac: Cambridge Advanced Learner's Dictionary [home, info]
9. -maniac, maniac: Wiktionary [home, info]
10. -maniac, maniac: Webster's New World College Dictionary, 4th Ed. [home, info]
11. maniac: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. maniac: Infoplease Dictionary [home, info]
13. maniac: Dictionary.com [home, info]
14. maniac (adj.): Online Etymology Dictionary [home, info]
15. maniac: UltraLingua English Dictionary [home, info]
16. maniac: Cambridge Dictionary of American English [home, info]
17. MANIAC, Maniac (Conan Gray song), Maniac (Girlicious song), Maniac (Michael Sembello song), Maniac (Norwegian TV series), Maniac (TV series), Maniac (band), Maniac (film), Maniac (miniseries), Maniac (producer), Maniac (single), Maniac (song), Maniac (truck), Maniac: Wikipedia, the Free Encyclopedia [home, info]
18. Maniac: Online Plain Text English Dictionary [home, info]
19. maniac: Webster's Revised Unabridged, 1913 Edition [home, info]
20. maniac: Rhymezone [home, info]
21. maniac: AllWords.com Multi-Lingual Dictionary [home, info]
22. maniac: Webster's 1828 Dictionary [home, info]
23. MANIAC: Stammtisch Beau Fleuve Acronyms [home, info]
24. maniac: Free Dictionary [home, info]
25. maniac: Mnemonic Dictionary [home, info]
26. maniac: WordNet 1.7 Vocabulary Helper [home, info]
27. maniac: LookWAYup Translating Dictionary/Thesaurus [home, info]
28. maniac: Dictionary/thesaurus [home, info]

Art (1 matching dictionary)

29. -maniac: A Cross Reference of Latin and Greek Elements [home, info]

Business (1 matching dictionary)

30. maniac: Legal dictionary [home, info]

Computing (2 matching dictionaries)

31. MANIAC: CCI Computer [home, info]
32. -maniac, maniac: Encyclopedia [home, info]

Medicine (2 matching dictionaries)

33. maniac: online medical dictionary [home, info]
34. -maniac, maniac: Medical dictionary [home, info]

Miscellaneous (1 matching dictionary)

35. MANIAC: Acronym Finder [home, info]

Slang (1 matching dictionary)

36. maniac: Urban Dictionary [home, info]

Sports (3 matching dictionaries)

37. Maniac: Dan's Poker [home, info]
38. Maniac: Texas Hold'em Dictionary [home, info]
39. Maniac: Poker Terms [home, info]

(Note: See maniacs for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (maniac) ▸ noun:  an insane person ▸ Also see maniacs ▸ Word origin ▸ Words similar to maniac ▸ Usage examples for maniac ▸ Idioms related to maniac (New!) ▸ Popular adjectives describing maniac ▸ Words that often appear near maniac ▸ Rhymes of maniac ▸ Invented words related to maniac