(n.) The state or quality of being natural; conformity to nature.

Atticism Bohemianism abandon absolute realism affability appropriateness artlessness austerity authenticity baldness bareness bona fideness candor casualness chasteness chastity clarity classicalism classicism clearness comeliness common speech common touch cordiality correctness dignity directness discrimination distinction ease easiness easygoingness elegance elegancy familiarity felicitousness felicity finish fittingness flow flowing periods fluency folksiness frankness genuineness good taste grace gracefulness gracility graciousness health homeliness homespun homeyness honesty household words inartificiality informality informalness intactness irregularity leanness legitimacy lifelikeness limpidity literalism literality literalness looseness lucidity matter-of-factness natural man natural state naturalism nature naturism neatness normalcy normality normalness offhandedness openness order pellucidity perspicuity photographic realism plain English plain speaking plain speech plain style plain words plainness polish pristineness propriety prosaicness prosiness purity realism realness refinement regularity relaxedness restrainedness restraint rustic style seemliness severity simpleness simplicity sincerity smoothness soberness sociability spareness spontaneity starkness state of nature straightforwardness taste tastefulness terseness true-to-lifeness truth to nature unadorned style unadornedness unadulteration unaffectation unaffectedness unartificialness unassumingness unceremoniousness unconstrainedness unconstraint unconventionality undisguise unfictitiousness unimaginativeness unpoeticalness unpretentiousness unrestraint unspeciousness unspoiledness unspuriousness unsyntheticness verisimilitude vernacular virginity wholesomeness