It is descended from the dialects in France of Anjou and Poitou, and retains features obliterated during the French standardization efforts of the 19th century, including an alveolar r, and the pronunciation of the final syllable in the third-person plural verb form.
Many speakers of other dialects of French, such as the French of France and even other Canadian dialects, have difficulty understanding Acadian speech.
Acadian French is the ancestor of Cajun, a French dialect of Louisiana, where the British colonial government deported many Acadians after winning Acadia from France.
See also Chiaque, a related but distinct English-French creole language.