What is a bounder?

A bounder is typically used to describe a person who behaves in a socially unacceptable or dishonorable way, often characterized by a lack of integrity or consideration for others. The term can imply a sense of arrogance or self-importance, often associated with someone who is opportunistic or unreliable. Historically, it has also been used in British English to refer to a man of low social standing who tries to act above his station. Overall, calling someone a bounder suggests they are untrustworthy and lacking in moral principles.