gagacommon nounadjectiveEtymologyexpand(common noun 1) from the Ancient Greek γαγάτης gagatès (gagatès) and the Latin gagates (id): shiny black fossilized coaldictionary of Forez, the Gaga dialectDefinitions1. inhabitant of Saint-ÉtiennefamiliarexpandBienvenue chez les gagas2. popular language of Saint-Étienne and its regionellipsisexpandLe gaga est le parler stéphanois.3. a person who regresses into childhoodexpandUn vieux gaga.PluralgagasSee alsogagas (adj.) gagas (cn.)