Synonyms and Antonyms of arduous
- Climbing Mount Everest is an arduous, exhausting challenge.
abstract, abstruse, complex, complicated, elusive, hairy, insoluble, intricate, involved, knotty, opaque, problematic (also problematical), recondite, serious, spiny, stubborn, thorny, ticklish, tricky
- the arduous task of doing the research for my term paper
Synonym Discussion of arduous
- farming is hard work
- the difficult ascent of the mountain
- the arduous task of rebuilding
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