• Adjective

    requiring great exertion; laborious; difficult
    an arduous undertaking.
    requiring or using much energy and vigor; strenuous
    making an arduous effort.
    hard to climb; steep
    an arduous path up the hill.
    hard to endure; full of hardships; severe
    an arduous winter.

    Antonyms

    adjective
    easy , facile , motivating

    Synonyms

    adjective
    backbreaking , burdensome , exhausting , fatiguing , formidable , grueling , harsh , heavy , labored , laborious , murder , no picnic , onerous , painful , punishing , rigorous , rough , severe , strenuous , taxing , tiring , toilsome , tough , troublesome , trying , uphill , hard , serious , tall , demanding , difficult , effortful , exacting , exigent , oppressive , weighty , lofty , steep , tight , wearisome
    Lấy từ « http://tratu.soha.vn/dict/en_en/Arduous »

    tác giả


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