Mentally incompetent and Rational

Opposite meaning terms

Definitions of Mentally incompetent not found.

Rational is an antonym for mentally incompetent in insane topic.

Rational adjective - Having the ability to reason.

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Mentally incompetent is an antonym for rational.

Cite this Source

Rational and Mentally incompetent. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/mentally_incompetent/rational

Mentally incompetent & Rational. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/mentally_incompetent/rational>.

Rational or Mentally incompetent. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/mentally_incompetent/rational.

Google Ngram Viewer shows how "mentally incompetent" and "rational" have occurred on timeline