rig·​or·​ous | \ ˈri-g(ə-)rəs How to pronounce rigorous (audio) \

Definition of rigorous

1 : manifesting, exercising, or favoring rigor : very strict
2a : marked by extremes of temperature or climate
b : harsh, severe
3 : scrupulously accurate : precise

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Other Words from rigorous

rigorously adverb
rigorousness noun

Choose the Right Synonym for rigorous

rigid, rigorous, strict, stringent mean extremely severe or stern. rigid implies uncompromising inflexibility. rigid rules of conduct rigorous implies the imposition of hardship and difficulty. the rigorous training of recruits strict emphasizes undeviating conformity to rules, standards, or requirements. strict enforcement of the law stringent suggests severe, tight restriction or limitation. stringent standards of admission

Examples of rigorous in a Sentence

rigorous enforcement of the rules a rigorous course of study We subjected the data to a rigorous analysis.
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Recent Examples on the Web

Park yourself at the new Six Senses, which recently opened atop an oceanside cliff, with a rigorous wellness program, a kitchen garden with a mushroom hut, and a wide infinity pool that appears to plunge off the edge of the earth. Alex Postman, Condé Nast Traveler, "Finding the Bali You Came For," 16 Nov. 2018 Hospitals were turning to the Philippines for recruits because of the country’s rigorous nursing programs. Lucette Lagnado, WSJ, "A Sisterhood of Nurses," 11 Aug. 2018 Meantime, California remains fully committed to a rigorous 50-state program with a full range of vehicle choices. Megan Geuss, Ars Technica, "Fuel economy standards kill people, Trump administration claims," 2 Aug. 2018 Hrabowski, a veteran of the Rev. Martin Luther King Jr.’s 1963 Children’s Crusade, wanted to create a Science, Technology, Engineering and Math program that would prepare underrepresented minorities for the nation's most rigorous Ph.D. programs. Catherine Rentz, baltimoresun.com, "'Agents of change:' A year with the UMBC program shaping some of the nation's best and most diverse scientists," 18 May 2018 All adult leaders have successfully completed the rigorous Wood Badge training program. Shirley Macfarland, cleveland.com, "Altenheim Grand Community Open House will showcase new Therapy Rehab Center: Strong Points," 27 Apr. 2018 Piedmont, a Charlotte-Mecklenburg school in uptown Charlotte, enrolls about 1,000 students for its rigorous International Baccalaureate program, with a long waiting list every year. Ann Helms, charlotteobserver, "This group scoured America for 10 great magnet schools. They found one in Charlotte. | Charlotte Observer," 22 Mar. 2018 Much of the production jump can be attributed to a rigorous offseason conditioning program. Pat Disabato, Daily Southtown, "Power source: Homewood-Flossmoor's Zaid Walker set for big senior season," 15 Mar. 2018 This is the site for Certified Financial Planner™ professionals...people who have completed the rigorous CFP® education program; have a minimum of three years' experience and agree to abide by a strict code of ethics. Stewart Welch, AL.com, "Interest rates are rising- what you should do now," 12 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'rigorous.' 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 rigorous

15th century, in the meaning defined at sense 1

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Dictionary Entries near rigorous



rigor mortis





Statistics for rigorous

Last Updated

19 May 2019

Look-up Popularity

Time Traveler for rigorous

The first known use of rigorous was in the 15th century

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More Definitions for rigorous



English Language Learners Definition of rigorous

: very strict and demanding
: done carefully and with a lot of attention to detail
: difficult to endure because of extreme conditions


rig·​or·​ous | \ ˈri-gə-rəs How to pronounce rigorous (audio) \

Kids Definition of rigorous

1 : very strict rigorous rules
2 : hard to endure because of extreme conditions : harsh rigorous winters

Other Words from rigorous

rigorously adverb

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More from Merriam-Webster on rigorous

Thesaurus: All synonyms and antonyms for rigorous

Spanish Central: Translation of rigorous

Nglish: Translation of rigorous for Spanish Speakers

Britannica English: Translation of rigorous for Arabic Speakers

Comments on rigorous

What made you want to look up rigorous? Please tell us where you read or heard it (including the quote, if possible).


to speak slightingly about or to degrade

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