Denial, in ordinary English usage, has at least three meanings: asserting that any particular statement or allegation is not true ; the refusal of a request; and asserting that a true statement is not true. Wikipedia

Denial or abnegation is a psychological defense mechanism postulated by psychoanalyst Sigmund Freud, in which a person is faced with a fact that is too uncomfortable to accept and rejects it instead, insisting that it is not true despite what may be overwhelming evidence. Wikipedia

Assertion that an allegation is not true. Wikipedia Disambiguation

A psychological defense mechanism Wikipedia Disambiguation

Rejecting a fact despite the overwhelming evidence of its truth based on fear of its outcome Wikidata

explicit assertion that an allegation or other claim is false Wikidata