Doubs (Arpitan : Dubs)'s a department in eastern France named after the Doubs River. Its pronunciation's /du/ (the last two letters are silent). History As early as the 13th century, inhabitants of the northern two-thirds of Doubs spoke the Franc-Comtois language, a dialect of Langue d'Oïl. Residents of the southern third of Doubs spoke a dialect of the Arpitan language. Both languages co-existed with French, the official language of law and commerce, and continued to be spoken frequently… (More on Doubs)