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

The curriculum has become more rigorous, the course and extra-curricular opportunities have greatly expanded, and the level of accountability for student performance has increased steadily over the years. Karen Zurawski, Houston Chronicle, "SUNDAY CONVERSATION: Bonnie Holland retires from Katy ISD but plans to keep busy volunteering," 30 June 2019 Get our daily newsletter Mike Jay’s history of mescaline use is a bit of a mind-altering experience itself, both rollicking and intellectually rigorous. The Economist, "A mind-bending history of mescaline," 28 June 2019 Practices were rigorous, intense and the girls loved it. Emmett Hall, sun-sentinel.com, "Weston Warriors Girls U8 lacrosse club goes undefeated," 27 June 2019 Krantz was known to write 10,000 words per week, keeping a rigorous, disciplined daily writing schedule. Lexy Perez, The Hollywood Reporter, "Judith Krantz, Best-Selling Author and Journalist, Dies at 91," 23 June 2019 Nelson is one of our finest critical minds; the chance to catch her in any context is reason enough to leave the house, but paired in conversation with an equally provocative and intellectually rigorous artist makes this appearance unmissable. Agatha French, latimes.com, "Forget June gloom — These 5 L.A. literary events will brighten your week," 7 June 2019 Sycamore not only offers a rigorous academic program, but also many extra-curricular opportunities for students to explore areas of passion and interest. Jessica Levy, Indianapolis Star, "Sycamore School helps gifted children thrive," 7 June 2019 These parts needed to be made of a highly specific aluminum alloy that met rigorous standards for strength and durability, and according to a recent court plea, the company did not do that. Avery Thompson, Popular Mechanics, "NASA Says Two of Its Rockets Failed Because of Metals Fraud," 1 May 2019 The first rigorous study to assess the impact of ASMR on mood and physiology was published in 2018. Karen Pallarito, Health.com, "How Does ASMR Work? The Science Behind Those Brain-Tingling Sounds," 6 June 2019

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

14 Jul 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

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