ar·​du·​ous | \ˈär-jə-wəs, -dyu̇-, -jü-əs\

Definition of arduous 

1a : hard to accomplish or achieve : difficult an arduous task years of arduous training

b : marked by great labor or effort : strenuous … a life of arduous toil.— A. C. Cole

2 : hard to climb : steep an arduous path

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Other Words from arduous

arduously adverb
arduousness noun

Choose the Right Synonym for arduous

hard, difficult, arduous mean demanding great exertion or effort. hard implies the opposite of all that is easy. farming is hard work difficult implies the presence of obstacles to be surmounted or puzzles to be resolved and suggests the need of skill or courage. the difficult ascent of the mountain arduous stresses the need of laborious and persevering exertion. the arduous task of rebuilding

Examples of arduous in a Sentence

Traveling for several days by train, stagecoach and horseback, they would reach Mariposa Grove, a stand of some 200 ancient giant sequoias, where they would rest before embarking on an arduous descent via 26 switchbacks into the valley. — Tony Perrottet, Smithsonian, July 2008 As yoga classes go, this is not an arduous one, but the students don't know that. — Richard Corliss, Time, 23 Apr. 2001 Women of middling means had the most to gain from increased consumption, for imported goods often reduced their long and arduous labor, especially in making candles and soap or in spinning and weaving cloth. — Alan Taylor, American Colonies, 2000 He went through a long and arduous training program. an arduous journey across miles of desert
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Recent Examples on the Web

Because of the intensity of his wounds, Anthony still has a long and arduous road to recovery ahead of him. Anne Branigin, The Root, "Parkland, Fla., Survivor Who Saved 20 Finally Released From Hospital," 4 Apr. 2018 The promise of better days — which were evident around every corner during spring training — will now serve as a long-distant memory while the Tigers take their lumps during what figures to be a long and arduous struggle ahead. Anthony Fenech, Detroit Free Press, "Detroit Tigers spring training confirms expectation for losing season," 27 Mar. 2018 Rescuers are assessing whether the teenagers and their coach are able to make the arduous three-hour journey to the entrance while trying to maintain their strength with food and water. James Hookway, WSJ, "Thai Soccer Players, Coach Found Alive in Cave After 10 Days Underground," 3 July 2018 The businesses served the pioneering motorists who eschewed railroad travel in favor of making the arduous journey between Los Angeles and Bakersfield in their Dodge Tourings and Model Ts. Scott Garner,, "Neighborhood Spotlight: Sun Valley again finds itself navigating bumps in the road," 29 June 2018 Afterward, Chris began the arduous road to recovery. Donna Vickroy, Daily Southtown, "Orland Park teacher caps off stroke recovery by finishing Wisconsin Marathon," 22 June 2018 The process is arduous, with the private meetings giving way to days of testimony before the Senate Judiciary Committee, which has 11 Republicans and 10 Democrats. Kevin Freking,, "What to expect in the Supreme Court confirmation battle," 9 July 2018 The process is arduous, with the private meetings giving way to days of testimony before the Senate Judiciary Committee, which has 11 Republicans and 10 Democrats. Kevin Freking, The Seattle Times, "What to expect in the Supreme Court confirmation battle," 9 July 2018 Most have travelled for weeks from Central America, though some journeys are more arduous than others. The Economist, "America’s immigration system is broken," 28 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'arduous.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of arduous

1718, in the meaning defined at sense 1a

History and Etymology for arduous

Latin arduus high, steep, difficult; akin to Old Irish ard high

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Dictionary Entries near arduous







area amniotica

Statistics for arduous

Last Updated

24 Oct 2018

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Time Traveler for arduous

The first known use of arduous was in 1718

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More Definitions for arduous



English Language Learners Definition of arduous

: very difficult


ar·​du·​ous | \ˈär-jə-wəs \

Kids Definition of arduous

: difficult sense 1 an arduous climb

Other Words from arduous

arduously adverb working arduously

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More from Merriam-Webster on arduous

Thesaurus: All synonyms and antonyms for arduous

Spanish Central: Translation of arduous

Nglish: Translation of arduous for Spanish Speakers

Britannica English: Translation of arduous for Arabic Speakers

Comments on arduous

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to express warning or disapproval

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