Deduce
Deduce verb - To form an opinion or reach a conclusion through reasoning and information.
Usage example: I can deduce from the simple observation of your behavior that you're trying to hide something from me
Reason is a synonym for deduce in conclude topic. In some cases you can use "Reason" instead a verb "Deduce", when it comes to topics like work out, reach a conclusion, figure out.
Reason
Reason verb - To form an opinion or reach a conclusion through reasoning and information.
Usage example: she reasoned that since all of the cakes were on sale for the same price, she might as well pick the biggest one
Deduce is a synonym for reason in calculate topic. You can use "Deduce" instead a verb "Reason", if it concerns topics such as reach a conclusion, mentally analyze.
Mutual synonyms
Common collocations
Both words in one sentence
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For that reason, we can deduce that Sam, Fred and Joe remained friends for the rest of their lives.
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Lampshaded multiple times: on one note, the boys deduce that Choco is the reason why Mimi has high expectations in men.
Source: Manga / ChocoMimi -
In Atlantis: The Lost Empire, Mole is such a dirt expert that by examining a piece from under Milo's fingernail, he was able to deduce he was a linguist, much to his anger for some reason.
Source: Sherlock Scan
Cite this Source
Reason and Deduce. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/deduce/reason
Deduce & Reason. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/deduce/reason>.
Reason or Deduce. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/deduce/reason.
Google Ngram Viewer shows how "deduce" and "reason" have occurred on timeline