Ngoni is a Bantu language spoken in the Songea region of Tanzania. It is not an Nguni language, but only retains the name: It started as the Pangwa dialect of Nguni captives; over generations the original Nguni language was lost.Deo Ngonyani (2001) The Evolution of Tanzanian Ngoni. Sprach und Geschichfte in Afrika 16/17.
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