Warázu, also known as Pauserna or Guarasugwé (Guarasú'we), is a moribund Tupi–Guaraní language of Brazil. It was also formerly spoken in Bolivia.^[2] It is spoken by the Guarasugwé people, who were estimated to number 125 according to a census in 2012.^[3]

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Warázu
Pauserna
Guarasugwé
Native to	Bolivia
Region	Rondônia, Brazil and Beni Department, Bolivia
Ethnicity	46 (2000)
Extinct	Late 20th century[1]
Language family	Tupian Tupi–Guarani Guarayu Warázu
Official status
Official language in	Bolivia
Language codes
ISO 639-3	psm
Glottolog	paus1244
ELP	Pauserna

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Warázu is most closely related to Sirionó and Yuki (Yuqui). Ramirez (2017) places the classification of Warázu in the Guaraní subgroup of the Tupi-Guarani languages as follows:^[2]

Speakers are also known as Guaraiutá, Guaraju, Pauserna, Guarasugwe, or Warazúkwe [waɾaðúkwe].^[2]

Ramirez (2017) found only 2 remaining speakers of Warázu, an elderly couple consisting of Känä́tsɨ [kənə́tsɨ] (José Frei Leite) and Híwa (Ernestina Moreno). They were born in Riozinho (Urukuríti) in Rondônia, Brazil, and moved back and forth between Brazil and Bolivia until finally settling in Pimenteiras do Oeste, Rondônia.^[2][4][5]

Traditionally, the Warázu people had lived in the following 7 villages along the banks of the Guaporé River. However, the Warázu language is no longer spoken in these localities.

• Riozinho (Urukurɨ́ti) (on the banks of the Riozinho River, a tributary of the Guaporé River), Brazil
• Acurizal, Brazil
• Campo Grande (on the banks of the Paragúa River, a tributary of the Guaporé River), Bolivia
• Bella Vista, Bolivia
• Jangada, Bolivia
• Barranco Vermelho, Bolivia
• Flechas, Bolivia

Phonological inventory of Warázu:^[2]

Warázu pronouns:^[2]

For a list of Warázu plant and animal names from Ramirez (2017),^[2] see the corresponding Portuguese article.

• Anonymous (2015). Diccionario flora y fauna gwarasu. Santa Cruz de la Sierra: Talleres Gráficos Kipus.
• Riester, Jürgen (1972). Die Pauserna-Guarasug’wä. Monographie eines Tupi-Guaraní-Volkes in Ostbolivien. St. Augustin bein Bonn: Verlag des Anthropos-Instituts.
• Riester, Jürgen (1976). En busca de la Loma Santa. Indígenas en el Oriente Boliviano. Análisis de su situación actual. La Paz: Editorial Los Amigos del Libro.
• Riester, Jürgen (1977). Los Guarasug’wé: Crónica de sus últimos días. La Paz: Editorial Los Amigos del Libro.