PROPRIETY Copy link • PROPRIETYPeculiarity of possession, [Vid: “Right of PROPERTY”]. Suitableness, fitness, convenientia (fitness): congruentia (especially in outward conduct): decorum (in all one’s behavior and demeanor): honestas (in a moral sense): venustas or dignitas ac venustas (e.g., to act cum dignitate ac venustate).