What languages do the Nubians speak?

In Egypt and the Sudan, the language of the Nubians is colloquially called: Rutana. Its Arabic meaning is “to speak unintelligibly”. This derogative term is sometimes even used by the Nubians themselves. The Nubians in the Nile Valley speak three languages: Kunuuzi (or Mattokki), Nobiin and Andaandi (or Dongolaawi). These languages are part of the Nilo-Saharan language family.