(n.) Plural of Propriety.

amenities civilities civility comity convention courtliness decencies decorum dictates of society diplomatic code elegance elegancies etiquette exquisite manners formalities good form good manners manners mores natural politeness point of etiquette politeness politesse protocol punctilio quiet good manners rules of conduct social code social conduct social graces social procedures social usage the conventions the mores the proprieties the right things what is done