arse

This term is predominantly used in British English and carries a vulgar, earthy tone. It is significantly more blunt than the American counterpart, though it can range from a harsh insult to a term of affectionate mockery among close friends depending on the social setting. When used to describe a person, it suggests a specific blend of stubbornness and stupidity. It implies the person is not just wrong, but irritatingly so, often lacking self-awareness of their own absurdity.