Definition of reasonnext
1
as in explanation
a statement given to explain a belief or act she gave a good reason for her seemingly suspicious behavior

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2
as in motive
something (as a belief) that serves as the basis for another thing a firm belief that we are here on earth to help others is the reason for her tireless volunteer work

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reason

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verb

1
as in to understand
to form an opinion or reach a conclusion through reasoning and information she reasoned that since all of the cakes were on sale for the same price, she might as well pick the biggest one

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Synonym Chooser

How is the word reason different from other verbs like it?

Some common synonyms of reason are cogitate, deliberate, reflect, speculate, and think. While all these words mean "to use one's powers of conception, judgment, or inference," reason stresses consecutive logical thinking.

able to reason brilliantly in debate

When is it sensible to use cogitate instead of reason?

The meanings of cogitate and reason largely overlap; however, cogitate implies deep or intent thinking.

cogitated on the mysteries of nature

Where would deliberate be a reasonable alternative to reason?

The synonyms deliberate and reason are sometimes interchangeable, but deliberate suggests slow or careful reasoning before forming an opinion or reaching a conclusion or decision.

the jury deliberated for five hours

When is reflect a more appropriate choice than reason?

The words reflect and reason can be used in similar contexts, but reflect suggests unhurried consideration of something recalled to the mind.

reflecting on fifty years of married life

When can speculate be used instead of reason?

The words speculate and reason are synonyms, but do differ in nuance. Specifically, speculate implies reasoning about things theoretical or problematic.

speculated on the fate of the lost explorers

When would think be a good substitute for reason?

Although the words think and reason have much in common, think is general and may apply to any mental activity, but used alone often suggests attainment of clear ideas or conclusions.

teaches students how to think

Example Sentences

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.
Recent Examples of reason
Noun
Here are three reasons some experts say are why healthcare costs have risen recently. — ABC News, 2 Nov. 2026 Several courts have upheld the firing of deputy sheriffs for political reasons. — News Editor, CBS News, 2 Nov. 2026
Verb
But the choice was intentional, and based on reasoning Abbott quickly came to understand. — Ct Jones, Rolling Stone, 29 Oct. 2026 Queried by The News, Manhattan District Attorney Alvin Bragg’s office declined to comment on prosecutors’ reasoning for downgrading the murder charge beyond what was said in court. — Molly Crane-Newman, New York Daily News, 22 Oct. 2026 See All Example Sentences for reason
Recent Examples of Synonyms for reason
Noun
  • This information then results in some discomfort on both our parts, and the potential for a lot more explanation about my life than an acquaintance needs.
    — Judith Martin, Sun Sentinel, 29 Oct. 2026
  • The lawsuit argues the change violates the Administrative Procedure Act because it was adopted without explanation and the First Amendment, which protects lawyers' ability to advise people of their legal rights and seek prospective clients.
    — Arkansas Online, Arkansas Online, 29 Oct. 2026
Noun
  • No arrests have been made, and detectives have not released details of a motive behind the shootings.
    — Mark Price November 2, Charlotte Observer, 2 Nov. 2026
  • Still, further research is needed to fully explain the motives and rationale behind the reuse of pagan tombs and sarcophagi during the medieval Christian period, Roffey told CNN in an email.
    — Mindy Weisberger, CNN Money, 2 Nov. 2026
Noun
  • Heavy rain was a factor, but the Falcons refused to use the weather as an excuse.
    — CBS News, CBS News, 2 Nov. 2026
  • That is no excuse for fans who target the families of college football coaches.
    — Trey Wallace OutKick, FOXNews.com, 2 Nov. 2026
Noun
  • As a cause of death, hyperthermia often is diagnosed by excluding every other possibility, since body temperature at the time of death is not always available or knowable.
    — Adriana Pérez, Chicago Tribune, 1 Nov. 2026
  • France, Italy, Serbia and Spain have seen protests against the cost of living, among other causes.
    — Freddie Clayton, NBC news, 1 Nov. 2026
Noun
  • Art—in the broadest sense—has been enlisted to this aim in the region at least once before, namely in the construction of hundreds of new churches during the spiritual low point of the immediate postwar period.
    — Kristian Vistrup Madsen, Artforum, 1 Nov. 2026
  • But cancer, a spinal issue, and three surgeries in three years changed my body and my sense of balance.
    — Maribeth Romslo, Rolling Stone, 1 Nov. 2026
Noun
  • To that end, here are seven points to keep in mind in order to strength train properly, no matter your age or fitness level.
    — Laura Solla, Vogue, 3 Nov. 2026
  • That disconnect may help explain why affordability remains one of the most important issues on voters' minds this election season.
    — CBS News, CBS News, 3 Nov. 2026
Noun
  • The model uses a World Reasoning Action Model (WRAM) architecture to connect task reasoning, outcome prediction, and action generation.
    — Jijo Malayil, Interesting Engineering, 30 Oct. 2026
  • The frontier labs are good at the language and reasoning columns.
    — Stephen Messer, Fortune, 29 Oct. 2026
Verb
  • After accepting the Up Against It role, Whitaker requested time with an oncologist for a briefing on Rose’s treatment to understand the real-life protocols around treating cancer.
    — Melanie Goodfellow, Deadline, 4 Nov. 2026
  • But for decades, scientists didn’t understand the neural underpinnings of cognitive exhaustion.
    — Cody Cottier, Scientific American, 4 Nov. 2026

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Cite this Entry

“Reason.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/reason. Accessed 5 Nov. 2026.

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