Dialects
There are two dialects of Chuvash: Viryal or Upper (which has both o and u) and Anatri or Lower (which has u for both o and u: up. totă "full", tută "taste" – lo. tută "full, taste" ). The literary language is based on both the Lower and Upper dialects. Both Tatar and the Uralic languages have influenced the Chuvash language, as have Russian, Mari, Mongolian, Arabic, and Persian, which have all added many words to the Chuvash lexicon.
Read more about this topic: Chuvash Language