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We found 32 dictionaries with English definitions that include the word arduous:
Click on the first link on a line below to go directly to a page where "arduous" is defined.

General dictionaries General (29 matching dictionaries)
  1. arduous: Oxford Dictionaries [home, info]
  2. arduous: American Heritage Dictionary of the English Language [home, info]
  3. arduous: Collins English Dictionary [home, info]
  4. arduous: Vocabulary.com [home, info]
  5. arduous: Macmillan Dictionary [home, info]
  6. arduous: Merriam-Webster's Online Dictionary, 11th Edition [home, info]
  7. arduous: Cambridge Advanced Learner's Dictionary [home, info]
  8. Arduous: Wiktionary [home, info]
  9. arduous: Webster's New World College Dictionary, 4th Ed. [home, info]
  10. arduous: V2 Vocabulary Building Dictionary [home, info]
  11. arduous: The Wordsmyth English Dictionary-Thesaurus [home, info]
  12. arduous: Infoplease Dictionary [home, info]
  13. Arduous, arduous: Dictionary.com [home, info]
  14. arduous: Online Etymology Dictionary [home, info]
  15. arduous: UltraLingua English Dictionary [home, info]
  16. arduous: Cambridge Dictionary of American English [home, info]
  17. Arduous: Wikipedia, the Free Encyclopedia [home, info]
  18. Arduous: Online Plain Text English Dictionary [home, info]
  19. arduous: Webster's Revised Unabridged, 1913 Edition [home, info]
  20. arduous: Rhymezone [home, info]
  21. arduous: AllWords.com Multi-Lingual Dictionary [home, info]
  22. arduous: Webster's 1828 Dictionary [home, info]
  23. arduous: Free Dictionary [home, info]
  24. arduous: Mnemonic Dictionary [home, info]
  25. arduous: WordNet 1.7 Vocabulary Helper [home, info]
  26. arduous: LookWAYup Translating Dictionary/Thesaurus [home, info]
  27. arduous: Dictionary/thesaurus [home, info]

Business dictionaries Business (1 matching dictionary)
  1. arduous: Legal dictionary [home, info]

Computing dictionaries Computing (1 matching dictionary)
  1. arduous: Encyclopedia [home, info]

Slang dictionaries Slang (1 matching dictionary)
  1. arduous: Urban Dictionary [home, info]

Quick definitions from Macmillan (
American English Definition British English Definition

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Quick definitions from WordNet (arduous)

adjective:  difficult to accomplish; demanding considerable mental effort and skill ("The arduous work of preparing a dictionary")
adjective:  characterized by toilsome effort to the point of exhaustion; especially physical effort ("Worked their arduous way up the mining valley")
adjective:  taxing to the utmost; testing powers of endurance ("Your willingness after these six arduous days to remain here- F.D.Roosevelt")

Word origin

Words similar to arduous

Popular nouns described by arduous

Phrases that include arduous:   in an arduous manner

Words similar to arduous:   arduously, arduousness, backbreaking, grueling, gruelling, hard, heavy, laborious, labourious, punishing, straining, strenuous, toilsome, more...

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