Sûreté Syllabification: (Sûre·té)Pronunciation: /sYrˈtā/ (also Sûreté nationale /näsyôNˈnäl/)Definition of Sûreté the French police department of criminal investigation. Origin:French, literally '(National) Security'Sûreté in other Oxford dictionaries Definition of Sûreté in the British & World English dictionary