bon appetit idiom meaning , origin, examples in a sentence, dark meanings, definition , synonyms, interesting facts, backstory, and the history of the phrase. BON APPÉTIT meaning : 1. a phrase, originally from French, meaning "good appetite", said to someone who is about to eat…. Learn more. Discover the Bon Appétit meaning —a classic French phrase that celebrates food, joy, and the art of sharing meals! Bon appétit definition : (I wish you) a hearty appetite.. See examples of BON APPÉTIT used in a sentence.