unreasoning

[ uhn-ree-zuh-ning ]

/ ʌnˈri zə nɪŋ /

SEE MORE SYNONYMS FOR unreasoning ON THESAURUS.COM

adjective

not reasoning or exercising reason; reasonless; thoughtless; irrational: an unreasoning fanatic.

Nearby words

unrealizable, unrealized, unreason, unreasonable, unreasonable behaviour, unreasoning, unreckonable, unrecognizable, unrecognized, unreconstructed, unreconstructible

Origin of unreasoning

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

Related forms

un·rea·son·ing·ly, adverb

Definition for unreasoning (2 of 2)

unreason

[ uhn-ree-zuh n ]

/ ʌnˈri zən /

noun

inability or unwillingness to think or act rationally, reasonably, or sensibly; irrationality.

lack of reason or sanity; madness; confusion; disorder; chaos: a world torn by unreason.

verb (used with object)

to upset or disrupt the reason or sanity of: The devious plot soon unreasoned the general.

Origin of unreason

First recorded in 1250–1300, unreason is from the Middle English word un-reson. See un-¹, reason

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for unreasoning

The specter of this virus fills some of our most stalwart souls with unreasoning dread even when it is no immediate threat.
Ebola Nurses Are As Brave As Soldiers|Michael Daly|October 17, 2014|DAILY BEAST
Yet it's plain that he thinks a little worse of himself for allowing his judgment to overmaster his unreasoning dread.
Guns are Dangerous, Even When Used by Good Men|David Frum|April 29, 2013|DAILY BEAST
I found myself trembling all over with an unreasoning fear, for there was something uncanny about the whole affair.
The Fire People|Ray Cummings
The sight of their stricken comrades, however, only seemed to drive the herd into deeper depths of dumb, unreasoning madness.
The Inca Emerald|Samuel Scoville

The injustice of the girl's unreasoning complaint was staggering.
The Heart of Unaga|Ridgwell Cullum
Unreasoning rage stirred within the old man, flushed his face with hot blood, made his eyes blaze.
Frank of Freedom Hill|Samuel A. Derieux
And, like an unreasoning animal, you turn to devour the thing that has hurt you?
The Mystics|Katherine Cecil Thurston

British Dictionary definitions for unreasoning (1 of 2)

unreasoning

/ (ʌnˈriːzənɪŋ) /

adjective

not controlled by reason; irrational

Derived Forms

unreasoningly, adverb

British Dictionary definitions for unreasoning (2 of 2)

unreason

/ (ʌnˈriːzən) /

noun

irrationality or madness

something that lacks or is contrary to reason

lack of order; chaos

verb

(tr) to deprive of reason

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