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We found 60 dictionaries with English definitions that include the word mad:
Click on the first link on a line below to go directly to a page where "mad" is defined.

General (33 matching dictionaries)

1. MAD, mad: Merriam-Webster.com [home, info]
2. MAD, mad: Oxford Learner's Dictionaries [home, info]
3. MAD, mad: American Heritage Dictionary of the English Language [home, info]
4. mad: Collins English Dictionary [home, info]
5. mad: Vocabulary.com [home, info]
6. -mad, mad: Macmillan Dictionary [home, info]
7. Mad, mad, mad: Wordnik [home, info]
8. -mad, mad: Cambridge Advanced Learner's Dictionary [home, info]
9. mad: Wiktionary [home, info]
10. mad: Webster's New World College Dictionary, 4th Ed. [home, info]
11. mad: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. mad: Infoplease Dictionary [home, info]
13. MAD, Mad: Dictionary.com [home, info]
14. mad: Online Etymology Dictionary [home, info]
15. mad: UltraLingua English Dictionary [home, info]
16. mad: Cambridge Dictionary of American English [home, info]
17. mad, mad: Cambridge International Dictionary of Idioms [home, info]
18. M.A.D, M.A.D. (Indian TV programme), M.A.D. (Veronica Mars), M.A.D (band), MAD (TV series), MAD (Video), MAD (programming language), MAD, Mad (Got7 EP), Mad (Ne-Yo song), Mad (Raven EP), Mad (TV series), Mad (band), Mad (magazine), Mad (professional wrestling), Mad (song), Mad, The Mad: Wikipedia, the Free Encyclopedia [home, info]
19. Mad: Online Plain Text English Dictionary [home, info]
20. mad: Webster's Revised Unabridged, 1913 Edition [home, info]
21. mad: Rhymezone [home, info]
22. mad: AllWords.com Multi-Lingual Dictionary [home, info]
23. mad: Webster's 1828 Dictionary [home, info]
24. MAD: Dictionary of Americanisms (1848) [home, info]
25. MAD, mad: Stammtisch Beau Fleuve Acronyms [home, info]
26. mad: Free Dictionary [home, info]
27. mad: Mnemonic Dictionary [home, info]
28. mad: WordNet 1.7 Vocabulary Helper [home, info]
29. mad: LookWAYup Translating Dictionary/Thesaurus [home, info]
30. MAD: Dictionary/thesaurus [home, info]
31. mad: Wikimedia Commons US English Pronunciations [home, info]

Art (2 matching dictionaries)

32. MAD: Glossary of Stamp Collecting Terms [home, info]
33. Ma&;D: Cooking Dictionary [home, info]

Business (7 matching dictionaries)

34. MAD: MoneyGlossary.com [home, info]
35. MAD: INVESTORWORDS [home, info]
36. MAD: bizterms.net [home, info]
37. MAD: Bloomberg Financial Glossary [home, info]
38. MAD: Investopedia [home, info]
39. mad: Legal dictionary [home, info]
40. MAD: Financial dictionary [home, info]

Computing (3 matching dictionaries)

41. MAD: Free On-line Dictionary of Computing [home, info]
42. MAD: CCI Computer [home, info]
43. MAD (programming language), MAD: Encyclopedia [home, info]

Medicine (3 matching dictionaries)

44. MAD, mad: online medical dictionary [home, info]
45. MAD: Prostate Cancer Interactive Glossary [home, info]
46. MAD: Medical dictionary [home, info]

Miscellaneous (5 matching dictionaries)

47. MAD: Acronym Finder [home, info]
48. mad: Magic or Madness [home, info]
49. MAD: Three Letter Words with definitions [home, info]
50. MAD: AbbreviationZ [home, info]
51. mad: Idioms [home, info]

Science (1 matching dictionary)

52. mad: LITTLE EXPLORERS(TM) Picture Dictionary [home, info]

Slang (3 matching dictionaries)

53. Mad: Totally Unofficial Rap [home, info]
54. Mad: Dublin Slang and Phrasebook [home, info]
55. M.A.D: Urban Dictionary [home, info]

Sports (1 matching dictionary)

56. MAD: Dog Fanciers Acronym List [home, info]

Tech (2 matching dictionaries)

57. MAD: GEOGRAPHIC INFORMATION SYSTEMS, CARTOGRAPHY, AND REMOTE SENSING [home, info]
58. MAD: DOD Dictionary of Military Terms: Joint Acronyms and Abbreviations [home, info]

(Note: See mads for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (mad) ▸ adjective:  roused to anger ("She gets mad when you wake her up so early") ▸ adjective:  very foolish ("A completely mad scheme to build a bridge between two mountains") ▸ adjective:  marked by uncontrolled excitement or emotion ("A mad whirl of pleasure") ▸ adjective:  affected with madness or insanity ("A man who had gone mad") ▸ name:  A surname (very rare: popularity rank in the U.S.: #81693) ▸ Also see mads ▸ Word origin ▸ Words similar to mad ▸ Usage examples for mad ▸ Idioms related to mad (New!) ▸ Popular nouns described by mad ▸ Words that often appear near mad ▸ Rhymes of mad ▸ Invented words related to mad