👉 Cappy is a popular slang term used in the United States and Canada. It refers to a person who has grown up with a close relative or friend, often by marriage or adoption, and is now in adulthood but still living under their parent's roof. Cappies are typically described as being "very close" to their parents and often have a strong bond with them. In the context of slang, cappy can also mean someone who has grown up with someone else, particularly a sibling,
