Allowable and Rational

Allowable

Allowable adjective - That may be permitted.

Rational and allowable are semantically related. In some cases you can use "Rational" instead an adjective "Allowable".

Rational

Rational adjective - Having the ability to reason.

Allowable and rational are semantically related. Sometimes you can use "Allowable" instead an adjective "Rational".

Cite this Source
Rational and Allowable. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/allowable/rational
Allowable & Rational. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/allowable/rational>.
Rational or Allowable. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/allowable/rational.
Google Ngram Viewer shows how "allowable" and "rational" have occurred on timeline