(n.) a denial; a renunciation.

abstinence calm calmness conservatism constraint continence contradiction control cool declension declination declinature declining denial deprivation disagreement disallowance disclaimer disclamation disobedience dispassion dissent evenness forbearance frugality gentleness golden mean happy medium holding back impartiality judiciousness juste-milieu lenity meden agan middle way mildness moderateness moderation moderationism nay naysaying negation negative negative answer negative attitude negativeness negativism negativity neutrality nix no nonacceptance noncompliance nonconsent nonobservance nonviolence nothing in excess pacifism prudence recantation refusal rejection renouncement renunciation repose repudiation restraint retention self-abnegation self-control self-denial self-discipline self-mastery self-restraint serenity soberness sobriety sophrosyne stability steadiness temperance temperateness thumbs-down tranquillity turndown unexcessiveness unextravagance unextremeness unwillingness via media withholding