Definition of arduous in English:

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Pronunciation: /ˈɑːdjʊəs/
Pronunciation: /ˈɑːdʒʊəs/


Involving or requiring strenuous effort; difficult and tiring: an arduous journey
More example sentences
  • Approach difficult people and arduous tasks with a light and positive attitude.
  • Thanks to everyone who gave their time and effort to the arduous task.
  • It had been a long and arduous journey from her home in Scotland and she was weary to her bones.
onerous, taxing, difficult, hard, heavy, laborious, burdensome, strenuous, vigorous, back-breaking, stiff, uphill, relentless, Herculean;
demanding, trying, tough, challenging, formidable, exacting;
exhausting, wearying, fatiguing, tiring, punishing, gruelling, grinding;
intolerable, unbearable, murderous, harrowing
informal killing, no picnic
British informal knackering
archaic toilsome
rare exigent



Pronunciation: /ˈɑːdjʊəsli/
Pronunciation: /ˈɑːdʒʊəsli/
Example sentences
  • Labor specialists agree that while most job candidates tend arduously to minute details regarding their resume and/or their appearance, they often overlook the significance of using language correctly.
  • To compete successfully in these events, runners must train arduously and consistently, be agile and maintain a strategy for the race.
  • This kind of cataloging requires mental stamina; overall, he has carefully and arduously selected suitable entries.


Pronunciation: /ˈɑːdjʊəsnəs/
Pronunciation: /ˈɑːdʒʊəsnəs/
Example sentences
  • The reunion is imperilled by the physical arduousness of the journey, the boys' suspicions about the father's true motives and the volatile dynamics among the three.
  • However, the arduousness of this process, and the attempts to block it, should not be forgotten.
  • Nothing daunted, Theroux embarked last year on a journey of astonishing arduousness.


Mid 16th century: from Latin arduus 'steep, difficult' + -ous.

For editors and proofreaders

Line breaks: ar¦du|ous

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