Kadaru language

Kadaru (also Kadaro, Kadero, Kaderu, Kodhin, Kodhinniai, Kodoro, Tamya) is a Hill Nubian language spoken in the northern Nuba Mountains in the south of Sudan. It is spoken by around 25,000 people in the Jibaal as-Sitta (Mountains of the Six) hills, between Dilling and Delami. Kordofan Nubian is a cluster of dialects also called Ajang Language with names of dialects varying according to specific clans. According to Ajang people, they all belong to one language group and although some sounds and words might have changed with time, they can understand each other quite well. It is closely related to Ghulfan, with which it forms the Kadaru-Ghulfan subgroup of Hill Nubian.

In the Middle Ages Nubian language was used as lingua franca of the Sudan and was used in writing, commerce and by the government. According to Ali Obeid Birema, Kadero should be considered as a diminishing language caused by the influence of Arabic and the ever-decreasing number of speakers.