We found 38 dictionaries that define the word lunatic:

General (26 matching dictionaries)

1. lunatic: Longman Dictionary of Contemporary English
2. lunatic: Merriam-Webster
3. lunatic: Oxford Learner's Dictionaries
4. lunatic: American Heritage Dictionary of the English Language
5. lunatic: Collins English Dictionary
6. lunatic: Vocabulary.com
7. Lunatic, lunatic: Wordnik
8. lunatic: Cambridge Advanced Learner's Dictionary
9. lunatic: Wiktionary
10. lunatic: Webster's New World College Dictionary, 4th Ed.
11. lunatic: The Wordsmyth English Dictionary-Thesaurus
12. lunatic: Infoplease Dictionary
13. Lunatic, lunatic: Dictionary.com
14. lunatic (adj.): Online Etymology Dictionary
15. lunatic: Cambridge Essential American English Dictionary
16. Lunatic (Booba album), Lunatic (Kongos album), Lunatic (boat), Lunatic (disambiguation), Lunatic (group), Lunatic: Wikipedia, the Free Encyclopedia
17. Lunatic: Online Plain Text English Dictionary
18. lunatic: Webster's Revised Unabridged, 1913 Edition
19. lunatic: Rhymezone
20. lunatic: AllWords.com Multi-Lingual Dictionary
21. lunatic: Webster's 1828 Dictionary
22. lunatic: FreeDictionary.org
23. lunatic: Mnemonic Dictionary
24. lunatic: TheFreeDictionary.com

Art (1 matching dictionary)

25. Natural Magick (No longer online)

Business (5 matching dictionaries)

26. lunatic: Merriam-Webster Legal Dictionary
27. Duhaime's Canadian law dictionary (No longer online)
28. Glossary of Legal Terms (No longer online)
29. Bouvier's Law Dictionary 1856 Edition (No longer online)
30. lunatic: Legal dictionary

Computing (1 matching dictionary)

31. lunatic: Encyclopedia

Medicine (2 matching dictionaries)

32. lunatic: Merriam-Webster Medical Dictionary
33. online medical dictionary (No longer online)

Miscellaneous (2 matching dictionaries)

34. Brilliant Dream Dictionary (No longer online)
35. lunatic: Idioms

Religion (1 matching dictionary)

36. Lunatic: Easton Bible

(Note: See lunatics as well.)

Definitions from Wiktionary ( ) ▸ noun:  An insane person. ▸ adjective:  Crazed, mad, insane, demented. ▸ adjective:  (literary, rare) Relating to the Moon; lunar. ▸ adjective:  (literary, rare) Influenced or affected by the Moon. Similar: madman, insane, daredevil, hothead, madcap, harum-scarum, maniac, swashbuckler, moonstruck, loon, more... Opposite: sane, rational, logical, reasonable Types: maniac, psychopath, sociopath, schizophrenic, more... Phrases: lunatic asylum, lunatic fringe, lunatic asylums, lunatic fringes, West Ryder Pauper Lunatic Asylum, more... Adjectives: dangerous, poor, criminal, harmless, alleged, old, homicidal, hopeless, complete, unfortunate, young Colors:     midnight blue,     blood red,     electric purple,     neon green,     phantom black, more... ▸ Word origin ▸ Words similar to lunatic ▸ Usage examples for lunatic ▸ Idioms related to lunatic ▸ Wikipedia articles (New!) ▸ Popular adjectives describing lunatic ▸ Popular nouns described by lunatic ▸ Words that often appear near lunatic ▸ Rhymes of lunatic ▸ Invented words related to lunatic