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We found 47 dictionaries with English definitions that include the word fail:
Click on the first link on a line below to go directly to a page where "fail" is defined.

General (31 matching dictionaries)

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

Business (8 matching dictionaries)

30. Fail: MoneyGlossary.com [home, info]
31. fail: Webster's New World Law Dictionary [home, info]
32. fail: INVESTORWORDS [home, info]
33. fail: Glossary of Legal Terms [home, info]
34. Fail: Bloomberg Financial Glossary [home, info]
35. Fail: Investopedia [home, info]
36. fail: Legal dictionary [home, info]
37. fail: Financial dictionary [home, info]

Computing (2 matching dictionaries)

38. Fail: Technopedia [home, info]
39. fail: Encyclopedia [home, info]

Medicine (1 matching dictionary)

40. fail: Medical dictionary [home, info]

Miscellaneous (3 matching dictionaries)

41. FAIL: Navajo Code Talkers' Dictionary [home, info]
42. Fail: Acronym Finder [home, info]
43. fail: Idioms [home, info]

Slang (1 matching dictionary)

44. F.A.I.L, FAIL: Urban Dictionary [home, info]

Tech (1 matching dictionary)

45. fail: SeaTalk Dictionary of English Nautical Language [home, info]

(Note: See fails for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (fail) ▸ verb:  become bankrupt or insolvent; fail financially and close ("A number of banks failed that year") ▸ verb:  fall short in what is expected ("She failed in her obligations as a good daughter-in-law") ▸ verb:  fail to get a passing grade ("She studied hard but failed nevertheless") ▸ verb:  judge unacceptable ("The teacher failed six students") ▸ verb:  be unsuccessful ("Where do today's public schools fail?") ▸ verb:  fail to do something; leave something undone ("She failed to notice that her child was no longer in his crib") ▸ verb:  be unable ("I fail to understand your motives") ▸ verb:  stop operating or functioning ("The engine failed on the way to town") ▸ verb:  prove insufficient ("The water supply for the town failed after a long drought") ▸ verb:  get worse ▸ verb:  disappoint, prove undependable to; abandon, forsake ("His sense of smell failed him this time") ▸ name:  A surname (very rare: popularity rank in the U.S.: #20916) ▸ Also see fails ▸ Word origin ▸ Words similar to fail ▸ Usage examples for fail ▸ Idioms related to fail (New!) ▸ Words that often appear near fail ▸ Rhymes of fail ▸ Invented words related to fail