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
This made sense for a few reasons, not least of which was that most multiplexes weren’t built to optimize CinemaScope releases. — Jim Hemphill, IndieWire, 12 Oct. 2026 Some risked their lives for journalistic ideals, others for no clear reason. — Ben Taub, New Yorker, 12 Oct. 2026
Verb
This, the perfectly decent people of Kettleborough reasoned, was a natural and godly rebuke for Susan and Cuthbert’s sin. — Literary Hub, 28 Sep. 2026 Lourdes Bishop Jean-Marc Micas in 2025 decided to cover the facade of the Notre Dame du Rosaire Basilica, reasoning that abuse victims who come to Lourdes for healing shouldn’t be forced to see them. — Nicole Winfield, Los Angeles Times, 27 Sep. 2026 See All Example Sentences for reason
Recent Examples of Synonyms for reason
Noun
  • Aquarius January 20 – February 18 A bigger idea may need a clearer explanation today.
    — Tarot.com, New York Daily News, 9 Oct. 2026
  • The process starts with the official voter guide, then suggests copying the exact language of a measure into an AI chatbot and asking for a plain-English explanation.
    — Jasmine Arenas, CBS News, 8 Oct. 2026
Noun
  • But boycotts are generally scrutinized when they are pursued for economic motives, Baer said, while speech is a different matter.
    — Miriam Waldvogel, Arkansas Online, 12 Oct. 2026
  • The motives and genres are changing, but the tech-founder movies and TV shows continue apace.
    — Brady Brickner-Wood, New Yorker, 12 Oct. 2026
Noun
  • Scammers can use major security incidents as an excuse to send fake notices or links designed to steal even more information.
    — Kurt Knutsson, FOXNews.com, 12 Oct. 2026
  • More from Taaffe The Dolphins are the youngest team in the league, but Taaffe and quarterback Malik Willis said this week that the Dolphins cannot use that as an excuse.
    — Barry Jackson, Miami Herald, 10 Oct. 2026
Noun
  • No injuries were reported and the cause of the fire is under investigation, the department said.
    — Shambhavi Rimal, Fort Worth Star-Telegram, 11 Oct. 2026
  • The disaster management agency is trying to determine the cause of the flash flood in the Budhi Gandaki river, which merges into the Trishuli river and is a key waterway near the capital Kathmandu.
    — ABC News, ABC News, 11 Oct. 2026
Noun
  • There’s a kind of sense with them of, This whole beach thing is really our vibe and the rest of you are just spectators.
    — Cressida Leyshon, New Yorker, 11 Oct. 2026
  • That’s reflected in the clips shown to the audience, which, unlike the previous films, really gives the sense that this place smells.
    — Joshua Rivera, Vulture, 11 Oct. 2026
Noun
  • But this is an album that’s apparently about the artist’s double life, and the questions that are bound to be at the forefront of any curious listener’s mind go unaddressed.
    — Daniel Bromfield, Pitchfork, 7 Oct. 2026
  • Eco effort Because Kanai is a protected area, eco efforts are top of mind.
    — Condé Nast, Condé Nast Traveler, 7 Oct. 2026
Noun
  • The new letter warns that the industry doesn't yet know how to safely build and deploy models whose reasoning process can't be monitored.
    — Beatrice Nolan, Fortune, 8 Oct. 2026
  • Such knowledge will be important in the future if, for example, a fraud regulator wants to determine the reasoning behind an agent’s recommendation to take no further action on suspicious activity.
    — Laurent Belsie, Christian Science Monitor, 7 Oct. 2026
Verb
  • If a degree needs to equip students for life outside of college, then a big part of that is understanding what employers are looking for.
    — Reynald Fasciaux, Fortune, 8 Oct. 2026
  • In addition to developing better medicines or perfumes, deciphering the mirror images of molecules can help scientists understand the chemical architecture of life, said chemist Holden Thorp, editor-in-chief of the journal Science.
    — Arkansas Online, Arkansas Online, 8 Oct. 2026

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Cite this Entry

“Reason.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/reason. Accessed 14 Oct. 2026.

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