Kurmanji (Kurdish: کورمانجی, Kurmancî, lit. 'Kurdish'), also termed Northern Kurdish, is the northernmost of the Kurdish languages, spoken predominantly in southeast Turkey, northwest and northeast Iran, northern Iraq, northern Syria and the Caucasus and Khorasan regions. It is the most widely spoken form of Kurdish. The earliest textual record of Kurmanji Kurdish dates back to approximately the 16th century and many prominent Kurdish poets like Ehmedê Xanî (1650–1707) wrote in this language. Kurmanji Kurdish is also the common and ceremonial language of Yazidis. Their sacred book Mishefa Reş and all prayers are written and spoken in Kurmanji. Ethnologue reports that the use of Kurmanji is declining in Turkey even when the language is used as a language of wider communication (LWC) by immigrants to Turkey, and that the language is threatened because it is losing speakers. Source: Wikipedia (en)