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irrationalism

[ih-rash-uh-nl-iz-uh m] /ɪˈræʃ ə nlˌɪz əm/
noun
1.
irrationality in thought or action.
2.
an attitude or belief having a nonrational basis.
3.
a theory that nonrational forces govern the universe.
Origin of irrationalism
1805-1815
1805-15; irrational + -ism
Related forms
irrationalist, adjective, noun
irrationalistic, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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