UNREASON Synonyms: 26 Similar and Opposite Words

unreason

noun

Definition of unreason

as in dementia

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Recent Examples of unreason Reason had to triumph in all things, or else waves of unreason, of which the Muckers were a model, would insinuate themselves into daily life. — Adam Gopnik, New Yorker, 17 Aug. 2026 In that book, his characters confront the decline of American public speech—its degeneration into varieties of unreason and the proto-fascist violence that follows. — Nicholas Dames, The Atlantic, 7 Apr. 2026 For all Eggers’s dramatization of unreason, his images sit heavily onscreen awaiting something more significant than mere admiration—interpretation. — Richard Brody, The New Yorker, 23 Dec. 2024 Like many politicians, Khan is trying to reason with a maelstrom of unreason. — Peter Guest, WIRED, 26 Mar. 2024 The country has entered what can only be characterized as an age of unreason, with large swaths of its population embracing wild conspiracy theories. — Jonathan Kirshner, Foreign Affairs, 29 Jan. 2021

Recent Examples of Synonyms for unreason

Noun

Sleep, for instance, isn’t downtime but active maintenance, when the brain flushes out cellular waste in ways that may help stave off dementia.

— Andrea Gawrylewski, Scientific American, 1 Sep. 2026
Developed by researchers in the US, the remarkable new treatment could one day be used to treat patients in advanced stages of dementia by restoring the brain’s ability to recover from ongoing neurodegeneration.

— Mike McRae August 30, New Atlas, 31 Aug. 2026

Definition of dementia

Noun

Like the real-life star of such films as Black Swan, M is a former child actor whose film roles include a ballerina who descends into madness.

— René Ostberg, Encyclopedia Britannica, 2 Sep. 2026
As dark occurrences begin to shatter the quiet of their isolated home, the boy is forced to navigate a harrowing psychological nightmare where the line between real-world madness and supernatural terror blurs.

— Melanie Goodfellow, Deadline, 1 Sep. 2026

Definition of madness

Noun

Massachusetts law states that a person committed after a successful insanity defense can be recommitted over and over again, each time for a one-year period.

— Aysha Bagchi, USA Today, 28 Aug. 2026
Doing the same thing over again and expecting a different result is what some people call insanity.

— Ryan Canfield OutKick, FOXNews.com, 28 Aug. 2026

Definition of insanity

Noun

But for a law firm ready to convert AI mania into billable hours, there’s a ready payoff at hand.

— Tim McDonnell, semafor.com, 3 Sep. 2026
Still On The Docket 5 biggest unanswered questions When hockey’s news cycle started slowing down back in early July-ish, post-offer-sheet mania, a surprising number of big-time storylines were still left hanging in the air.

— James Mirtle, New York Times, 3 Sep. 2026

Definition of mania

Noun

Symptoms, which can take up to two months to develop, may include headache, nausea and sore throat before progressing to hallucinations, delusions, disorientation, paralysis and coma.

— Jen Christensen, CNN Money, 4 Sep. 2026
Smaller numbers reported experiencing delusions, hallucinations, physical pain, rage, and suicidality.

— Olga Khazan, The Atlantic, 4 Sep. 2026