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We found 40 dictionaries with English definitions that include the word forty:
Click on the first link on a line below to go directly to a page where "forty" is defined.

General (33 matching dictionaries)

1. forty: Merriam-Webster.com [home, info]
2. forty: Oxford Learner's Dictionaries [home, info]
3. forty: American Heritage Dictionary of the English Language [home, info]
4. forty: Collins English Dictionary [home, info]
5. forty: Vocabulary.com [home, info]
6. forty: Macmillan Dictionary [home, info]
7. Forty, forty: Wordnik [home, info]
8. forty: Cambridge Advanced Learner's Dictionary [home, info]
9. forty: Wiktionary [home, info]
10. forty: Webster's New World College Dictionary, 4th Ed. [home, info]
11. forty: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. forty: Infoplease Dictionary [home, info]
13. Forty, forty: Dictionary.com [home, info]
14. forty: Online Etymology Dictionary [home, info]
15. Forty, forty: UltraLingua English Dictionary [home, info]
16. forty: Cambridge Dictionary of American English [home, info]
17. forty: Cambridge International Dictionary of Idioms [home, info]
18. Forty (album), Forty: Wikipedia, the Free Encyclopedia [home, info]
19. Forty: Online Plain Text English Dictionary [home, info]
20. forty: Webster's Revised Unabridged, 1913 Edition [home, info]
21. forty: Rhymezone [home, info]
22. forty: AllWords.com Multi-Lingual Dictionary [home, info]
23. forty: Webster's 1828 Dictionary [home, info]
24. Forty: Dictionary of Phrase and Fable (1898) [home, info]
25. Forty: 1911 edition of the Encyclopedia Britannica [home, info]
26. forty: Free Dictionary [home, info]
27. forty: Hutchinson Dictionaries [home, info]
28. forty: Mnemonic Dictionary [home, info]
29. forty: WordNet 1.7 Vocabulary Helper [home, info]
30. forty: LookWAYup Translating Dictionary/Thesaurus [home, info]
31. forty: Dictionary/thesaurus [home, info]

Art (1 matching dictionary)

32. Forty: Dictionary of Symbolism [home, info]

Computing (1 matching dictionary)

33. forty: Encyclopedia [home, info]

Miscellaneous (2 matching dictionaries)

34. FORTY: AbbreviationZ [home, info]
35. forty: Idioms [home, info]

Science (1 matching dictionary)

36. forty: MATH SPOKEN HERE! [home, info]

Slang (1 matching dictionary)

37. forty: Urban Dictionary [home, info]

Sports (1 matching dictionary)

38. Forty: Hickok Sports Glossaries [home, info]

(Note: See fortys for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (forty) ▸ noun:  the cardinal number that is the product of ten and four ▸ adjective:  being ten more than thirty ▸ Also see fortys ▸ Word origin ▸ Words similar to forty ▸ Usage examples for forty ▸ Idioms related to forty (New!) ▸ Popular adjectives describing forty ▸ Popular nouns described by forty ▸ Words that often appear near forty ▸ Rhymes of forty ▸ Invented words related to forty