Definition & Meaning of "Nancy"in English

What is the origin of the term "Nancy" and how is it used?

Nancy is a slang term that appeared in early–mid 20th-century English to describe a gay man, particularly one perceived as effeminate or delicate in manner. The term comes from the use of the proper name "Nancy" for women, applied metaphorically to men to emphasize femininity or lack of traditional masculinity. Historically, it was derogatory, often used to mock or belittle gay men, though it could sometimes be used playfully within familiar or queer circles. Today it is mostly historical and considered offensive if used outside knowledgeable or affectionate contexts.