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irrationality

[ih-rash-uh-nal-i-tee] /ɪˌræʃ əˈnæl ɪ ti/
noun, plural irrationalities for 2.
1.
the quality or condition of being irrational.
2.
an irrational, illogical, or absurd action, thought, etc.
Origin of irrationality
1560-1570
1560-70; irrational + -ity
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for irrationality

irrationality

/ɪˌræʃəˈnælɪtɪ/
noun
1.
the state or quality of being irrational
2.
irrational thought, action, or behaviour
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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Word Origin and History for irrationality
n.

1560s, from irrational + -ity.

Online Etymology Dictionary, © 2010 Douglas Harper
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16
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