Chagatai language
Under the pen name Nava'i, Alisher was among the key writers who revolutionized the literary use of the Turkic languages. Nava'i himself wrote primarily in the Chagatai language and produced 30 works over a period of 30 years, during which Chagatai became accepted as a prestigious and well-respected literary language. Nava'i also wrote in Persian (under the pen name "Fāni"), and, to a much lesser degree, in Arabic.