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Definition of arduous adjective from the Oxford Advanced Learner's Dictionary

arduous

adjective
 
/ˈɑːdʒuəs/
 
/ˈɑːrdʒuəs/
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  1. involving a lot of effort and energy, especially over a period of time
    • an arduous journey across the Andes
    • The work was arduous.
    Extra Examples
    • It was physically arduous work.
    • The road back to political stability is long and arduous.
    • an arduous task/​process
    Topics Working lifec2
    Oxford Collocations DictionaryArduous is used with these nouns:
    • climb
    • journey
    • process
    • …
    See full entry
    Word Originmid 16th cent.: from Latin arduus ‘steep, difficult’ + -ous.
See arduous in the Oxford Advanced American DictionarySee arduous in the Oxford Learner's Dictionary of Academic English
Check pronunciation: arduous

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