au na·tu·rel \ˌōˌnad.əˈrel, ōˈnachərəl, ōˈnad.ərəl\adjective Etymology: French 1. a.: in natural style or condition < a remarkably au naturel attitude > b.: nude < we went swimming au naturel > 2. a.: cooked without dressing : cooked plainly < oysters au naturel > b.: uncooked