Reason
Reason noun - Something (as a belief) that serves as the basis for another thing.
Usage example: a firm belief that we are here on earth to help others is the reason for her tireless volunteer work
Why is a synonym for reason in intention topic. In some cases you can use "Why" instead a noun "Reason", when it comes to topics like start, explanation for an action.
Why
Why noun - Something (as a belief) that serves as the basis for another thing.
Usage example: asked the whys behind the surprising decision
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Synonyms for Why
Mutual synonyms
Cite this Source
Why and Reason. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/reason/why
Reason & Why. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/reason/why>.
Why or Reason. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/reason/why.
Google Ngram Viewer shows how "reason" and "why" have occurred on timeline