Uncouth/ʌnˈkuːθ/ Definition 1 of 3Pro Tip 1/3Negative Nuance Conveys disapproval or negativity about someone's behavior or manners. Despite his wealth, his uncouth behavior made him unwelcome. Pro Tip 2/3Social Situations Used to describe actions inappropriate in polite or formal social events. His uncouth interruption during the speech was shocking. Pro Tip 3/3Cultural Subjectivity What is uncouth in one culture may be acceptable in another. Visitors found his direct questions uncouth, though normal in his culture.