Reason and Reasonableness

Reason

Reason noun - The normal or healthy condition of the mental abilities.
Usage example: was afraid that with all the stress he was under, he'd lose all reason

Reasonableness is a synonym for reason in common sense topic. In some cases you can use "Reasonableness" instead a noun "Reason", when it comes to topics like mental analysis. popular alternative

Reasonableness

Reasonableness noun - The state of having good sense and sound judgment.

Reason is a synonym for reasonableness in common sense topic. You can use "Reason" instead a noun "Reasonableness", if it concerns topics such as sanity, sound judgment, mental health. popular alternative

Nearby Words: reason, reasonable
Cite this Source
Reasonableness and Reason. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/reason/reasonableness
Reason & Reasonableness. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/reason/reasonableness>.
Reasonableness or Reason. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/reason/reasonableness.
Google Ngram Viewer shows how "reason" and "reasonableness" have occurred on timeline