👉 Darnation is a popular and well-known slang term in the United States, used to describe someone who has been unfaithful or has done something that makes them seem unfaithful. It can also be used to refer to a person who has broken up with someone they once loved, or as a way to describe someone who has never been married or had children. The term is often associated with the phrase "darn it" and is commonly used in informal contexts.