1. Noun.  The negation in logic.
  2. Noun.  A refusal to comply with a request.
  3. Noun.  An assertion of untruth.
  4. Noun.  Refusal to believe a problem exists.
  5. Noun.  (context, formerly) A defense mechanism involving a refusal to accept the truth of a phenomenon or prospect.

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This entry was last updated on RefTopia from its source on 3/20/2012.