self-deception

[self-di-sep-shuhn, self-]
noun
the act or fact of deceiving oneself.
Also called self-deceit [self-di-seet, self-] .


Origin:
1670–80

self-deceptive, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
self-deception or self-deceit
 
n
the act or an instance of deceiving oneself, esp as to the true nature of one's feelings or motives
 
self-deceit or self-deceit
 
n
 
self-de'ceptive or self-deceit
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Example sentences
Her answers, unsatisfactory as they are, suggest a profound capacity for
  self-deception.
It is, then, wanton self-deception to confuse royal government with government
  by a good king.
But their comfort zone is furnished with self-deception.
But even if that were true, this would still stand as an egregious instance of
  self-deception.
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