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
But another victory could be significant for a different reason. Tim Corlett, Forbes.com, 13 Aug. 2026 Turnout is widely expected to be low for a variety of reasons. ABC News, 13 Aug. 2026
Verb
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 Cousins reasoned that whether an MMR counts as an associated entity is not an automatic yes or no. Michael McCann, Sportico.com, 5 Aug. 2026 See All Example Sentences for reason
Recent Examples of Synonyms for reason
Noun
  • Luigi Mangione is due in federal court today after both parties hastily called for an appearance earlier this week without any clear explanation.
    David Goldman, CNN Money, 14 Aug. 2026
  • The same explanation has been offered as to why Riyadh Air, or another PIF company, does not just pour money into Newcastle through sponsorship deals.
    Chris Waugh, New York Times, 14 Aug. 2026
Noun
  • Investigators determined that Matute, aka Paguada Paguada, knew the two victims, but the motive for the shooting is still unclear.
    Briauna Brown, CBS News, 12 Aug. 2026
  • Rahmani said Nick’s interactions with guests at the party could be used as evidence of motive.
    Nancy Dillon, Rolling Stone, 12 Aug. 2026
Noun
  • That is more true inside a company than at national scale, because a company has fewer excuses.
    Vibhas Ratanjee, Forbes.com, 17 Aug. 2026
  • The ostensibly patriotic event repeated every year, serving as a kind of decoy, an excuse for tribal members to gather and dance.
    Rachel Monroe, New Yorker, 17 Aug. 2026
Noun
  • The top cause of otherwise-profitable Japanese companies closing, Ooi notes, is not weak demand but a shortage of workers.
    Jurin AI Contributor, Forbes.com, 18 Aug. 2026
  • The cause of the fire remains unknown as of publication, per the department, and will be investigated once conditions allow.
    Nathalie Marie Palacios, CBS News, 18 Aug. 2026
Noun
  • What’s crucially lacking here is a particularly compelling sense of Reagan and Gorbachev as human characters.
    Guy Lodge, Variety, 12 Aug. 2026
  • People think of intimacy in a romantic sense, but the relationships artists have with the people in their corner in the industry is also really intimate.
    Cathy Applefeld Olson, Forbes.com, 11 Aug. 2026
Noun
  • The new mind also has to solve the math problem sitting in front of it.
    Lisa Nee, Chicago Tribune, 13 Aug. 2026
  • The cold is what first springs to mind when thinking of Oldham’s home.
    Richard Sutcliffe, New York Times, 13 Aug. 2026
Noun
  • The donor’s reasoning gets examined at length; the communities depending on the outcome are treated as a destination, not a party to the decision.
    Vandana Arcot, Fortune, 14 Aug. 2026
  • Before conscious reasoning has a chance to engage, the brain often constructs an elaborate threat narrative.
    Rodger Dean Duncan, Forbes.com, 13 Aug. 2026
Verb
  • The team says understanding why the impurities do not prevent the formation of high-quality pyrite could help guide the development of similar materials from abundant resources.
    Neetika Walter, Interesting Engineering, 15 Aug. 2026
  • Yet Rosenwald understood that people who command such great resources also have a responsibility to use these resources to help others.
    Harold Pollack, Chicago Tribune, 14 Aug. 2026

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Cite this Entry

“Reason.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/reason. Accessed 18 Aug. 2026.

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