This study presents, for the first time, a comprehensive descriptivestudy of the Arabic dialect spoken in the city of Essaouira (Mogador), including updated data on its Muslim and Jewish varieties. The Muslim variety of the local Arabic had been ignored for more than a centurysince dialectologists believed that the city's population was mostlyethnically Amazigh speaking, what this study proved to be amisconception. The book also contains data on the rural dialect of the Chiadma territory, precisely the city of Aquermoud in thesurroundings of Essaouira ? never described before. New oral texts bysome of the remaining Jewish speakers in the city and in the diasporaare also included.