discourtesy

This term describes a failure to observe the standards of polite behavior, often carrying a connotation of intentional neglect or a lack of respect. It is more formal than rudeness and is frequently used in professional or social contexts to describe a specific breach of etiquette. As a noun, it can function as an abstract quality (general impoliteness) or as a countable event (a specific rude act). When referring to the general quality of being rude, it is treated as an uncountable mass noun.