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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: Merriam-Webster.com [home, info]
  2. arduous: Oxford Dictionaries [home, info]
  3. arduous: American Heritage Dictionary of the English Language [home, info]
  4. arduous: Collins English Dictionary [home, info]
  5. arduous: Vocabulary.com [home, info]
  6. arduous: Macmillan Dictionary [home, info]
  7. Arduous, arduous: Wordnik [home, info]
  8. arduous: Cambridge Advanced Learner's Dictionary [home, info]
  9. arduous: Wiktionary [home, info]
  10. arduous: Webster's New World College Dictionary, 4th Ed. [home, info]
  11. arduous: V2 Vocabulary Building Dictionary [home, info]
  12. arduous: The Wordsmyth English Dictionary-Thesaurus [home, info]
  13. arduous: Infoplease Dictionary [home, info]
  14. Arduous, arduous: Dictionary.com [home, info]
  15. arduous: Online Etymology Dictionary [home, info]
  16. arduous: UltraLingua English Dictionary [home, info]
  17. arduous: Cambridge Dictionary of American English [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]

(Note: See arduousness for more definitions.)

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")

▸ Also see arduousness
Word origin

Words similar to arduous

Usage examples for arduous

Popular nouns described by arduous

Words that often appear near arduous

Rhymes of arduous

Invented words related to 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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