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Synonyms

unreasoning

American  
[uhn-ree-zuh-ning] / ʌnˈri zə nɪŋ /

adjective

  1. not reasoning or exercising reason; reasonless; thoughtless; irrational.

    an unreasoning fanatic.


unreasoning British  
/ ʌnˈriːzənɪŋ /

adjective

  1. not controlled by reason; irrational

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Derived Forms

Etymology

Origin of unreasoning

First recorded in 1745–55; un- 1 + reasoning

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

While those words are engraved in historical memory, the ones that immediately follow are just as important: Roosevelt singled out the "nameless, unreasoning, unjustified terror which paralyzes needed efforts to convert retreat into advance."

From Salon • Sep. 12, 2021

I’m most interested in the bright line that Pinker draws between the empirical spirit of science and the unreasoning obscurantism he suggests otherwise prevails.

From New York Times • Feb. 24, 2018

Not everyone agrees that today’s fears are unreasoning or unjustified.

From The Wall Street Journal • Jan. 14, 2016

If it is simply a matter of introducing into the process some figure in whom the public has unreasoning trust, we might just as plausibly have the president’s targeting decisions reviewed by Oprah.

From Time • Feb. 19, 2013

Now he really did look like Tom, and Matt felt an unreasoning surge of dislike.

From "The House of the Scorpion" by Nancy Farmer

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