Insane
Insane adjective - Having or showing a very abnormal or sick state of mind.
Usage example: only an insane person would intentionally jump off a skyscraper
Rational
Rational adjective - According to the rules of logic.
Usage example: insisted there was a rational explanation for the strange creaking noises and that there were no such things as ghosts
Both words in one sentence
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At the very end, it's ambiguous whether he's truly insane, or truly rational for the first time in the entire film and choosing lobotomy over living with his crime.
Source: Through the Eyes of Madness -
Mostly because a lot of geniuses are too insane to have a rational business plan.
- He was the Duke's science partner in the past, and serves as the only rational advisor to the insane duke.
Source: Five Bad Band / Film
Cite this Source
Rational and Insane. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/insane/rational
Insane & Rational. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/insane/rational>.
Rational or Insane. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/insane/rational.
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