Being proper is an admirable trait that we all strive to possess, and the use of synonyms help us to express this trait in a variety of ways. Some synonyms for being proper include being well-mannered, behaving appropriately, acting with propriety, being seemly, or conforming to social norms. Other synonyms include being dignified, respectful, polished, sophisticated, refined, cultured, or with etiquette. Being proper can also be expressed through synonyms like being decorous, more decent, formal, respectable, or correct. Ultimately, cultivating the ability to be proper is essential for navigating social situations with grace and ease, and incorporating synonyms for this quality can make our communication more nuanced and insightful.