adjective

arduous

difficult, tiring, strenuous

It was an arduous journey through the mountains.

It was an arduous journey through the mountains.

He began the arduous task of cleaning the house.

He began the arduous task of cleaning the house.

((an arduous)) ((noun)) difficult and tiring It was an arduous journey.

Synonyms: difficult, strenuous, laborious; Antonyms: easy, effortless

From Latin 'arduus', meaning 'steep, difficult'.

Imagine an 'arduous' task is like climbing a steep ('arduus') mountain – very difficult and tiring.

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