Mbukushu language
Mbukushu or Thimbukushu is a Bantu language spoken by 45,000 people along the Okavango River in Namibia, where it is a national language and in Botswana, Angola and Zambia.
Mbukushu is one of several Bantu languages of the Okavango which have click consonants. Mbukushu has three: tenuis c, voiced gc, and nasalized nc, as well as prenasalized ngc, which vary between speakers as dental, palatal, and postalveolar ''. It also has a nasal glottal approximant.