Custenau language explained

Custenau
States:Brazil
Region:Mato Grosso
Extinct:?
Familycolor:American
Fam2:Southern ?
Fam3:Paresí–Xingu
Fam4:Waurá
Map2:Lang Status 01-EX.svg
Iso3:none
Linglist:qbp
Glotto:kust1238
Glottorefname:Kustenau

Custenau (Kustenaú) is an extinct Arawakan language of Brazil.