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arduous.

Adjective
FormalLiterary
MEANING

Demanding great effort or endurance because of difficulty, length, or intensity.

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Words that belong together

  • arduous task
  • arduous journey
  • arduous process

On the page

The arduous climb reduced their conversation to short breaths and hand signals.

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Opposite meanings

Word forms
Base
arduous

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Usage notes

Arduous emphasizes sustained difficulty or effort; it describes the work, not merely the person doing it.

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