Kamarupi Prakrit, Kamrupi Apabhramsa, old Kamrupi dialect, Kamarupa dialect and proto-Kamrupa; was the Middle Indo-Aryan (MIA) used in ancient Kamarupa. This language is the historical ancestor of the Kamatapuri lects and the Assamese language; and can be dated prior to 1250 CE, when the proto-Kamta language, the parent of the Kamatapuri lects, began to develop. This sort of Sporadic Apabhramsa is a mixture of Sanskrit, Prakrit and colloquial dialects of Assam.