Chechen language
Chechen ( , ) is a Northeast Caucasian language spoken by more than 1.4 million people, mostly in the Chechen Republic and by members of the Chechen diaspora throughout Russia, Jordan, Central Asia (mainly Kazakhstan and Kyrgyzstan), and Georgia.
Pechenegs
Mahmud al-Kashgari, an 11th-century man of letters specialized in Turkic dialects argued that the language spoken by the Pechenegs was a variant of the Cuman and Oghuz idioms. He suggested that foreign influences on the Pechenegs gave rise to phonetical differences between their tongue and the idiom spoken by other Turkic peoples. Anna Komnene likewise stated that the Pechenegs and the Cumans shared a common language. Although the Pecheneg language itself died out centuries ago, the names of the Pecheneg "provinces" recorded by Constantine Porphyrogenitus prove that the Pechenegs spoke a Turkic language. The Huns, Khazars and Pechenegs are thought to have belonged to the same proto-Turkic group of languages as the modern Chuvash language (Oghur dialects).