arduous

== English == === Etymology === From Latin arduus (“lofty, high, steep, hard to reach, difficult, laborious”), akin to Irish ard (“high”). === Pronunciation === (Received Pronunciation) IPA(key): /ˈɑː.djuː.əs/, /ˈɑː.d͡ʒuː.əs/ (US) IPA(key): /ˈɑɹ.d͡ʒu.əs/ === Adjective === arduous (comparative more arduous, superlative most arduous) Needing or using up much energy; testing powers of endurance. For more quotations using this term, see Citations:arduous. (obsolete) burning; ardent 1805-1814, Dante, Henry Francis Cary (translator), The Divine Comedy Difficult or exhausting to traverse. For more quotations using this term, see Citations:arduous. ==== Synonyms ==== burdensome, demanding, exhausting, fatiguing, laborious, onerous, strenuous, strugglesome, wearisome, uphill ==== Derived terms ==== ==== Related terms ==== arduity ==== Translations ==== === Further reading === “arduous”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC. William Dwight Whitney, Benjamin E[li] Smith, editors (1911), “arduous”, in The Century Dictionary […], New York, N.Y.: The Century Co., →OCLC. “arduous”, in OneLook Dictionary Search.