denial

(noun) the act of refusing to comply (as with a request). Example: "It resulted in a complete denial of his privileges."

(noun) the act of asserting that something alleged is not true. Synonyms: disaffirmation.

(noun) (psychiatry) a defense mechanism that denies painful thoughts.

(noun) renunciation of your own interests in favor of the interests of others. Synonyms: abnegation, self-abnegation, self-denial, self-renunciation.

(noun) a defendant's answer or plea denying the truth of the charges against him. Synonyms: defense, defence, demurrer. Example: "He gave evidence for the defense."