Rational
Rational adjective - Having the ability to reason.
Reasonably and rational are semantically related. In some cases you can use "Reasonably" instead an adjective "Rational".
Reasonably
Reasonably adverb - With good reason or courtesy.
Rational and reasonably are semantically related. Sometimes you can use "Rational" instead an adjective "Reasonably".
Mutual synonyms
Cite this Source
Reasonably and Rational. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/rational/reasonably
Rational & Reasonably. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/rational/reasonably>.
Reasonably or Rational. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/rational/reasonably.
Google Ngram Viewer shows how "rational" and "reasonably" have occurred on timeline