denial
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denial
1. the rejection of the truth of a proposition, doctrine, etc.
2. a psychological process by which painful truths are not admitted into an individual's consciousness
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
denial
[di′nī·əl] (mathematics)
(psychology)
An unconscious defense mechanism in which an individual denies herself or himself recognition of an observation in order to avoid pain or anxiety.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.