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

Brain disease in dogs and people Our work on aging dogs all began with a desire to develop better treatments for dementia.

— Julie Moreno, The Conversation, 6 Oct. 2026
However, among individuals who already had dementia, glucosamine users had a higher mortality compared to similar non-users.

— Shiv Sudhakar, FOXNews.com, 5 Oct. 2026

Definition of dementia

Noun

Zosia Mamet, Jason Schwartzman, Chris O’Dowd, Billie Lourd, and Will Price flit in and out of the picture, some trying to act as the voices of reason and others cheering on the madness.

— David Fear, Rolling Stone, 6 Oct. 2026
Does this guy go to a movie or play, or even read a book, to escape the madness?

— Voice of the People, New York Daily News, 4 Oct. 2026

Definition of madness

Noun

Counsel was enraged that his gambit was foiled by one jury holdout on the insanity argument.

— Voice of the People, New York Daily News, 2 Oct. 2026
Prosecutors questioned the schizophrenia diagnosis and pointed out that suffering from mental illness is not the same as meeting the legal standard of insanity.

— Clara Harter, Los Angeles Times, 1 Oct. 2026

Definition of insanity

Noun

The Mayo Clinic defines the mental health condition as typically marked by hallucinations, delusions, depression, and mania.

— Leigh Blickley, Entertainment Weekly, 29 Sep. 2026
The 57-year-old star kept the animal print mania going with her pointed-toe fuzzy leopard print slingback heels and held a microscopic black patent leather bag in one hand.

— Lara Walsh, InStyle, 23 Sep. 2026

Definition of mania

Noun

The Mayo Clinic defines the mental health condition as typically marked by hallucinations, delusions, depression, and mania.

— Leigh Blickley, Entertainment Weekly, 29 Sep. 2026
Hill became increasingly paranoid and developed delusions that she was being surveilled.

— Rebecca White, New York Daily News, 28 Sep. 2026