What is monkey suit?

A monkey suit is a slang term for a formal suit worn by men. It typically consists of a jacket with lapels, a dress shirt, formal trousers, and a tie. The term "monkey suit" is often used in a derogatory way, implying that the wearer is conforming to societal norms or dressing up unnecessarily. The origins of the term are unclear, but some suggest it may have come from the uniform worn by organ grinders' monkeys in the 19th century.