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
The Brazilian beauty sat this one out, but for a good reason. — Madeleine Marr, Miami Herald, 19 Oct. 2026 Supporters remain cautious about College Football Playoff talk, but UCLA’s rapid turnaround has given them reason to believe again. — Jordan Puente, Los Angeles Times, 19 Oct. 2026
Verb
Republicans saw all this coming from a mile away, of course, spending huge sums to help Cornyn defeat Paxton in the primary, reasoning that the general election would be a relative layup for Cornyn. — Burgess Everett, semafor.com, 8 Oct. 2026 Contrived or not, the models appeared to be reasoning about their own situations— forming plans, weighing consequences, anticipating countermoves. — Kevin Roose, Vanity Fair, 7 Oct. 2026 See All Example Sentences for reason
Recent Examples of Synonyms for reason
Noun
  • But conventional explanations emphasizing liberalism’s association with economic development and the rise of a middle class cannot fully account for ideological shifts.
    — Mansoor Moaddel, Foreign Affairs, 15 Oct. 2026
  • But the younger Trejo’s account at least offers an explanation for why his father took the job with Shapiro’s Daily Wire.
    — Alison Foreman, IndieWire, 15 Oct. 2026
Noun
  • Officials, developers and their architects and engineers have either declined to comment or questioned the researchers’ motives while assuring the public that the buildings are safe.
    — Denise Hruby, Miami Herald, 19 Oct. 2026
  • Police have not verified either claim, and no motive has been established.
    — Naman Ramachandran, Variety, 19 Oct. 2026
Noun
  • This is a unit that features two-star receivers, CeeDee Lamb and George Pickens, so there's no excuse for that.
    — Dan Zaksheske OutKick, FOXNews.com, 19 Oct. 2026
  • As someone who thinks NYE is a bit overrated, a wedding feels like the perfect excuse to dress up to the nines and celebrate.
    — Fred Sahai, Vogue, 19 Oct. 2026
Noun
  • As my colleague Clare Malone has reported in this magazine, Weiss first came to public attention in college, as a consequence of her support for Israel and consistent denigrations of the Palestinian cause.
    — Vinson Cunningham, New Yorker, 18 Oct. 2026
  • The cause of the blaze remains unclear, but a large number of patients have been taken to the hospital.
    — Jessie Yeung, CNN Money, 18 Oct. 2026
Noun
  • Investors should also look at a fund's 30-day SEC yield to get a sense of what the company is generating in terms of income.
    — Cheryl Winokur Munk, CNBC, 18 Oct. 2026
  • Government buildings were vandalized in multiple cities, contributing to a sense of national crisis that could boost leading far-right presidential candidate Marine Le Pen six months before elections.
    — Brendan Ruberry, semafor.com, 18 Oct. 2026
Noun
  • These are songs that iterate and elevate minor party fouls into dramas of symphonic proportion, arrangements that articulate the heightened emotions churning inside anxious minds.
    — Lily Goldberg, Pitchfork, 21 Oct. 2026
  • Several opinion polls show that rising costs of living are top of mind for voters ahead of the elections.
    — Chad de Guzman, Time, 21 Oct. 2026
Noun
  • The company also says its accuracy approaches that of NVIDIA’s largest reasoning model, despite having roughly one-fifth as many parameters.
    — Aamir Khollam, Interesting Engineering, 15 Oct. 2026
  • The reasoning for his second placement on administrative leave is unclear at this time.
    — Charles Baggarly, Fort Worth Star-Telegram, 15 Oct. 2026
Verb
  • But the really impactful part is understanding the function and developing it into a tool.
    — Adam Kovac, Scientific American, 14 Oct. 2026
  • The committee isn’t fully aware of the muddy bog in which Taverner is currently sinking, but Lamb is starting to understand the shape of it.
    — Scott Tobias, Vulture, 14 Oct. 2026

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Cite this Entry

“Reason.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/reason. Accessed 21 Oct. 2026.

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