Nouns

(n)denialthe act of refusing to comply (as with a request)“it resulted in a complete denial of his privileges”
(n)denial, disaffirmationthe act of asserting that something alleged is not true
(n)denial(psychiatry) a defense mechanism that denies painful thoughts
(n)abnegation, self-abnegation, denial, self-denial, self-renunciationrenunciation of your own interests in favor of the interests of others
(n)defense, defence, denial, demurrera defendant's answer or plea denying the truth of the charges against them“he gave evidence for the defense”