sweetenerPronunciation: /ˈswiːt(ə)nə/Translate sweetener | into French | into German | into Italian | into Spanish Definition of sweetener noun a substance used to sweeten food or drink, especially one other than sugar: diet drinks contain artificial sweeteners like saccharin informal, chiefly British an inducement, typically in the form of money or a concession:a sweetener may persuade them to sellsweetener in other Oxford dictionaries Definition of sweetener in the US English dictionary