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

Synonyms & Similar Words

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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

Synonyms & Similar Words

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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
Shaffer, a 5-foot-10, 185-pound senior linebacker/slotback, is one of the main reasons. Steve Reaven, Chicago Tribune, 19 Aug. 2026 Senior punter Oscar Doyle has given fans — and local children — a reason to smile. Shaun Goodwin, Idaho Statesman, 19 Aug. 2026
Verb
At the time, 1587 Sneakers reasoned that the football stars often take part in national advertising campaigns, making New York a fitting place to file. Jami Ganz, New York Daily News, 7 Aug. 2026 Engineers like me hold several spatial relationships in their minds at once, reasoning about where things sit relative to one another across scales ranging from a city block to a whole watershed. Hatim Sharif, The Conversation, 6 Aug. 2026 See All Example Sentences for reason
Recent Examples of Synonyms for reason
Noun
  • Another explanation is that there could be changes over time in diagnosis and reporting, or there could be other biological factors underlying why this condition appears to be increasing.
    Faye Chiu, CNN Money, 21 Aug. 2026
  • But the rise of 7-on-7 is a valid explanation for Chicago’s quarterback boom.
    Mike McGraw, Chicago Tribune, 20 Aug. 2026
Noun
  • Her motive wasn’t a major part of the trial, but evidence presented by the prosecution suggested her relationship with her in-laws had deteriorated.
    Hilary Whiteman, CNN Money, 20 Aug. 2026
  • Suspicious and revelatory, today’s moon in Scorpio is deeply attuned to hidden motives, subtext and all that is lingering beneath the surface.
    Valerie Mesa, PEOPLE, 19 Aug. 2026
Noun
  • In fact, hot summer days, casual weekends, and low-key outings are the perfect excuse to let the girls breathe.
    Julia Guerra, InStyle, 22 Aug. 2026
  • Save as a collection on MyRecipes Fall brings football tailgates, family dinners, and dozens more excuses to gather.
    Sarah Martens, Better Homes & Gardens, 22 Aug. 2026
Noun
  • Wiener has long championed making housing easier to build, but in San Francisco resisting development is a bedrock cause for those on the city’s left.
    Dan Walters, Mercury News, 25 Aug. 2026
  • Picking up a group tab, joining a cause, or saying yes to a social plan could stretch your budget, even if your generosity is sincere.
    Tarot.com, Sun Sentinel, 24 Aug. 2026
Noun
  • In its evaluation, the committee cited the film’s polished craftsmanship and the clarity of its directorial vision, pointing to the tone and mise-en-scène that sustain a sense of pressure throughout the story.
    Naman Ramachandran, Variety, 25 Aug. 2026
  • To channel this sense of joyful minimalism, pair a bold color with playful accents, rich textures, and meaningful décor that brings personality to the space without overwhelming it.
    Michele Laufik, Martha Stewart, 25 Aug. 2026
Noun
  • Monaco and Horodyshche, Ukraine — When the blast went off, Vadym Yermolaiev’s mind went blank.
    Ivana Kottasová, CNN Money, 20 Aug. 2026
  • Where the claims fall short The gap between a viral claim and a lifelong habit is exactly what White wants people to keep in mind.
    Olivia LaBorde, AJC.com, 20 Aug. 2026
Noun
  • When clinicians cannot verify the reasoning behind an AI response, the utility and integrity of clinical decisions come into question.
    Rhett Alden, Forbes.com, 21 Aug. 2026
  • The reasoning can be found in an Easter egg manager Walt Weiss dropped Sunday after Elder allowed one run over six innings in the Braves’ win over the Diamondbacks at Truist Park.
    Tyler Estep, AJC.com, 21 Aug. 2026
Verb
  • Three-dimensional geological modelling has improved the ability to understand how a mineral system is shaped at depth.
    Matthew Kayser, USA Today, 21 Aug. 2026
  • The challenge is not simply understanding asset allocation theory but also selecting managers, accessing differentiated opportunities and integrating them into a broader portfolio.
    Alex Shahidi, Forbes.com, 21 Aug. 2026

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Cite this Entry

“Reason.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/reason. Accessed 27 Aug. 2026.

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