Necessary
Necessary adjective - Forcing one's compliance or participation by or as if by law.
Rational and necessary are semantically related. In some cases you can use "Rational" instead an adjective "Necessary".
Nearby Words: necessity, necessarily
Mutual synonyms
Both words in one sentence
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Well-Intentioned Extremist: Word of God is that the film will take great pains to demonstrate why Apocalypse views his genocidal actions as rational and necessary.
Source: Film / X-Men: Apocalypse -
This is troubling to the heroes, because while Yu is just as evil and megalomaniacal as any other System Lord, he was at least rational and pragmatic compared to the outright psychosis of his fellows, and thus could be counted on for an Enemy Mine situation when it was necessary.
Source: Scatterbrained Senior
Cite this Source
Rational and Necessary. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/necessary/rational
Necessary & Rational. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/necessary/rational>.
Rational or Necessary. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/necessary/rational.
Google Ngram Viewer shows how "necessary" and "rational" have occurred on timeline