A phrase or expression in which the component words contradict one another, often unintentionally, or are claimed to do so when seen from a particular point of view.
An assertion of untruth.
A disownment or disavowal
Refusal to believe that a problem exists.
A defense mechanism involving a refusal to accept the truth of a phenomenon or prospect.
Refusal to admit responsibility for wrongdoing.
A refusal or failure to provide or grant something that is requested or desired.
Negationism, denialism of historical facts or accepted interpretation.
The negation in logic.