A flimsy nightie is an 8-letter term for a type of lingerie. It is a light, sheer garment made of delicate fabric such as silk or chiffon, and is usually worn in the bedroom. It is often designed with lace or other decorative details, and is typically shorter than a traditional nightgown. The term 'flimsy nightie' is also sometimes used to refer to a NEGLIGEE, which is a more formal version of the same type of garment.