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unreasoning

[uhn-ree-zuh-ning] /ʌnˈri zə nɪŋ/
adjective
1.
not reasoning or exercising reason; reasonless; thoughtless; irrational:
an unreasoning fanatic.
Origin of unreasoning
1745-1755
First recorded in 1745-55; un-1 + reasoning
Related forms
unreasoningly, adverb

unreason

[uhn-ree-zuh n] /ʌnˈri zən/
noun
1.
inability or unwillingness to think or act rationally, reasonably, or sensibly; irrationality.
2.
lack of reason or sanity; madness; confusion; disorder; chaos:
a world torn by unreason.
verb (used with object)
3.
to upset or disrupt the reason or sanity of:
The devious plot soon unreasoned the general.
Origin
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 Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for unreasoning

unreasoning

/ʌnˈriːzənɪŋ/
adjective
1.
not controlled by reason; irrational
Derived Forms
unreasoningly, adverb

unreason

/ʌnˈriːzən/
noun
1.
irrationality or madness
2.
something that lacks or is contrary to reason
3.
lack of order; chaos
verb
4.
(transitive) 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
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12
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