Terêna or Etelena is spoken by 15,000 Brazilians. The language has a dictionary and written grammar. Many Terênan people have low Portuguese

Portuguese language

Portuguese is a Romance language that arose in the medieval Kingdom of Galicia, nowadays Galicia and Northern Portugal. The southern part of the Kingdom of Galicia became independent as the County of Portugal in 1095...

 proficiency. It is spoken in Mato Grosso do Sul

Mato Grosso do Sul

Mato Grosso do Sul is one of the states of Brazil.Neighboring Brazilian states are Mato Grosso, Goiás, Minas Gerais, São Paulo and Paraná. It also borders the countries of Paraguay and Bolivia to the west. The economy of the state is largely based on agriculture and cattle-raising...

. 20% are literate in their language, 80% literate in Portuguese.

There were once four varieties, Kinikinao, Terena proper, Guaná, and Chané

Chané language

Chané is an extinct language of Argentina and Bolivia. It was either a dialect of or closely related to the Terena language of the Arawakan language family. There is little data on this language. In Argentina it was spoken in Salta province....

, which are sometimes considered separate languages (Aikhenvald 1999). Only Terena proper is still spoken.