rationale

noun

ra·​tio·​nale ˌra-shə-ˈnal How to pronounce rationale (audio)
1
: an explanation of controlling principles of opinion, belief, practice, or phenomena
2
: an underlying reason : basis

Did you know?

Rationale comes from Latin ratio, meaning "reason," and rationalis, "endowed with reason." Ratio is reasonably familiar as an English word for the relationship (in number, quantity, or degree) between things.

Examples of rationale in a Sentence

the rationale for starting the school day an hour later is that kids will supposedly get an extra hour of sleep
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Mara’s rationale for retaining both his GM and coach, meanwhile, was mind-numbing confirmation that the Giants no longer have any real standards. Pat Leonard, New York Daily News, 6 Jan. 2025 The rationale for allowing the play to continue was that the Colorado player knocked into a Buffalo player, which then interfered with Wedgewood. Dan Perry, Newsweek, 3 Jan. 2025 Beneath each recommendation was printed a brief rationale and pros and cons listed by delegates. Nick Romeo, The New Yorker, 31 Dec. 2024 The general rationale is simple: front-end trading services have the closest relationship with customers and therefore in a position to obtain KYC info and report relevant data to the IRS. Shehan Chandrasekera, Forbes, 27 Dec. 2024 See all Example Sentences for rationale 

Word History

Etymology

Latin, neuter of rationalis

First Known Use

1657, in the meaning defined at sense 1

Time Traveler
The first known use of rationale was in 1657

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Dictionary Entries Near rationale

Cite this Entry

“Rationale.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rationale. Accessed 21 Jan. 2025.

Kids Definition

rationale

noun
ra·​tio·​nale ˌrash-ə-ˈnal How to pronounce rationale (audio)
: a basic reason or explanation for something

More from Merriam-Webster on rationale

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