genteelism Syllabification: (gen·teel·ism)Pronunciation: /jenˈtēlizəm/Definition of genteelism noun a word or expression used because it is thought to be socially more acceptable than the everyday word:in German usage “sister” was the accepted genteelism for “mistress.”genteelism in other Oxford dictionaries Definition of genteelism in the British & World English dictionary