Propriety is a word that refers to the quality or state of being appropriate or proper. There are several synonyms that can be used in place of this word, including decorum, etiquette, civility, appropriateness, correctness, decency, and politeness. Decorum pertains to dignified behavior that is in keeping with established standards. Etiquette is the customary code of behavior in a particular society or group. Civility relates to polite and respectful behavior towards others. Appropriateness refers to being suitable or fitting for a particular purpose. Correctness implies adherence to established rules or principles. Decency refers to behavior that is in keeping with social norms. Politeness relates to courteous and respectful behavior towards others.