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 microbiome project will be a much more in-depth undertaking that involves DNA sequencing and imaging, as well as rigorous measurement of environmental parameters. Michael Verdon, Robb Report, "Meet the Ocean Activists Using Their Own Money to Study the Seas and Combat Climate Change," 10 Apr. 2021 The powerful audio performance featuring energetic bass levels balanced with mid-range vocals is impressive, even during a rigorous physical workout. Jeffrey Harper, chicagotribune.com, "Best cheap wireless earbuds," 9 Apr. 2021 In fact, because spear-phishing attacks are directed at high-level organizational targets, the C-suite should undergo more rigorous IT security education. Reed Wilson, Forbes, "Hybrid Work Factors To Consider When Connecting Your At-Home Workforce With Your In-Office Workforce," 9 Apr. 2021 But many who are fasting still have to go about their daily routines — some facing rigorous work, El Mesyah said, including the people living and working in his hometown of Tamloulet (تملولت), a small village in the Moroccan countryside. Andre Toran, The Courier-Journal, "Celebrating Ramadan? Here's what food local Muslims suggest when breaking the day's fast," 8 Apr. 2021 Our study showed that there’s a need for rigorous methods to assess communication training programs. Robert Capers, The Conversation, "Scientists need to become better communicators, but it’s hard to measure whether training works," 7 Apr. 2021 And many brands are less than rigorous in their audits. New York Times, "Global Brands Find It Hard to Untangle Themselves From Xinjiang Cotton," 6 Apr. 2021 After several states implemented more rigorous voter-identification requirements in the early 2000s, liberals cried foul and said the new laws would depress black turnout. Jason L. Riley, WSJ, "The Democrats Are Stuck in 1964," 6 Apr. 2021 The story benefits greatly from Foster’s rigorous daily dives, which increased the odds of getting interesting details, and the good timing involved in bringing in a professional cameraman later into the endeavor, his friend Roger Horrocks. Steve Dollar, Los Angeles Times, "‘My Octopus Teacher’ offers an intimacy with nature rarely seen," 6 Apr. 2021

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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Time Traveler for rigorous

Time Traveler

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

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Statistics for rigorous

Last Updated

13 Apr 2021

Cite this Entry

“Rigorous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rigorous. Accessed 15 Apr. 2021.

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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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Comments on rigorous

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