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
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 South Korea has been held up as a model of how to limit the spread of the coronavirus without a widespread lockdown, thanks to its rigorous testing, contact tracing and quarantine program. Sophie Jeong, CNN, "Hundreds of South Korea schools close again after reopening," 29 May 2020 Without going through a rigorous recovery process (more about that later), users can't receive the encrypted seed data from Twilio without demonstrating control of the original device or phone number used when setting up the authenticator. Dan Goodin, Ars Technica, "Choosing 2FA authenticator apps can be hard. Ars did it so you don’t have to," 27 May 2020 Airbnb recently implemented rigorous new cleaning guidelines to ensure guest safety, developed in partnership with former Surgeon General Dr. Vivek Murthy. Ashlea Halpern, Condé Nast Traveler, "How Airbnb Could Change After the Pandemic—For the Better," 20 May 2020 There are other options to reduce the effect of Covid-19 including developing therapeutic drugs, more rigorous testing, and contact tracing. New York Times, "What’s Going On in This Graph? | Estimated Time for Covid-19 Vaccine," 13 May 2020 The propulsive plot is counterweighted with rigorous, gracefully presented context on the history and behavior of diseases. Sophie Gilbert, The Atlantic, "The Strange Comfort of Reading a Pandemic Novel," 13 May 2020 Because of the rigorous testing, Iceland was able to continue life without a total economic shutdown. Cailey Rizzo, Travel + Leisure, "Iceland Is Ready to Reopen After Just 6 Weeks of Lockdown (Video)," 5 May 2020 In addition to rigorous cleaning, Oxford Hotels & Resorts, which manages a string of upscale hotels across the country, is leaving rooms empty after guests leave as a precaution. Chris Woodyard, USA TODAY, "Airbnb to issue cleaning standards, require 24 hours between rentals," 28 Apr. 2020 Today's standards for human-challenge trials are rigorous. Robert Kuznia, CNN, "Thousands of people want to be exposed to Covid-19 for science," 13 May 2020

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

1 Jun 2020

Cite this Entry

“Rigorous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rigorous. Accessed 2 Jun. 2020.

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More Definitions for rigorous


How to pronounce rigorous (audio)

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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