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We found 44 dictionaries with English definitions that include the word dumb:
Click on the first link on a line below to go directly to a page where "dumb" is defined.

General (30 matching dictionaries)

1. dumb: Merriam-Webster.com [home, info]
2. dumb: Oxford Dictionaries [home, info]
3. dumb: American Heritage Dictionary of the English Language [home, info]
4. dumb: Collins English Dictionary [home, info]
5. dumb: Vocabulary.com [home, info]
6. dumb, dumb: Macmillan Dictionary [home, info]
7. Dumb, dumb: Wordnik [home, info]
8. dumb: Cambridge Advanced Learner's Dictionary [home, info]
9. dumb: Wiktionary [home, info]
10. dumb: Webster's New World College Dictionary, 4th Ed. [home, info]
11. dumb: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. dumb: Infoplease Dictionary [home, info]
13. Dumb, dumb: Dictionary.com [home, info]
14. dumb: Online Etymology Dictionary [home, info]
15. dumb: UltraLingua English Dictionary [home, info]
16. dumb: Cambridge Dictionary of American English [home, info]
17. Dumb (Faith Evans song), Dumb (Jazmine Sullivan song), Dumb (Nirvana song), Dumb (Tich song), Dumb: Wikipedia, the Free Encyclopedia [home, info]
18. dumb: Cambridge International Dictionary of Phrasal Verbs [home, info]
19. Dumb: Online Plain Text English Dictionary [home, info]
20. dumb: Webster's Revised Unabridged, 1913 Edition [home, info]
21. dumb: Rhymezone [home, info]
22. dumb: AllWords.com Multi-Lingual Dictionary [home, info]
23. dumb: Webster's 1828 Dictionary [home, info]
24. dumb: Free Dictionary [home, info]
25. dumb: Mnemonic Dictionary [home, info]
26. dumb: WordNet 1.7 Vocabulary Helper [home, info]
27. dumb: LookWAYup Translating Dictionary/Thesaurus [home, info]
28. dumb: Dictionary/thesaurus [home, info]

Art (1 matching dictionary)

29. Dumb: Epicurus.com Wine Glossary [home, info]

Business (2 matching dictionaries)

30. DUMB: Bouvier's Law Dictionary 1856 Edition [home, info]
31. Dumb (disambiguation), dumb: Legal dictionary [home, info]

Computing (1 matching dictionary)

32. Dumb (disambiguation), dumb: Encyclopedia [home, info]

Medicine (2 matching dictionaries)

33. dumb: online medical dictionary [home, info]
34. Dumb (disambiguation), dumb: Medical dictionary [home, info]

Miscellaneous (4 matching dictionaries)

35. Dumb: Brilliant Dream Dictionary [home, info]
36. DUMB: Acronym Finder [home, info]
37. DUMB: AbbreviationZ [home, info]
38. dumb: Idioms [home, info]

Religion (1 matching dictionary)

39. Dumb: Easton Bible [home, info]

Slang (1 matching dictionary)

40. D.U.M.B, The Dumb, dumb: Urban Dictionary [home, info]

Tech (2 matching dictionaries)

41. dumb: Book Binding [home, info]
42. Dumb: Wine Taster's Glossary [home, info]

(Note: See dumbs for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (dumb) ▸ adjective:  unable to speak because of hereditary deafness ▸ adjective:  lacking the power of human speech ("Dumb animals") ▸ adjective:  unable to speak temporarily ("Struck dumb") ▸ adjective:  slow to learn or understand; lacking intellectual acuity ("Dumb officials make some really dumb decisions") ▸ Also see dumbs ▸ Word origin ▸ Words similar to dumb ▸ Usage examples for dumb ▸ Popular nouns described by dumb ▸ Words that often appear near dumb ▸ Rhymes of dumb ▸ Invented words related to dumb