Bororoan languages
The Borôroan languages of Brazil are Borôro and the extinct Umotína and Otuke. They are sometimes considered to form part of the proposed Macro-Jê language family, though this has been disputed. They are called the Borotuke languages by Mason (1950), a portmanteau of Bororo and Otuke. Languages. The relationship between the languages is, Gorgotoqui may have also been a Bororoan language. See Otuke for various additional varieties of the Chiquito Plains in Bolivia which may have been dialects of it, such as Kovare and Kurumina. There are other recorded groups that may have spoken languages or dialects  closer to Borôro, such as Aravirá, but nothing is directly known about these languages: Orari (Eastern Borôro, Orarimugodoge), listed by Loukotka as a language that was spoken on the Valhas River, Garças River, and Madeira River in Mato Grosso, is another name for Bororo. Bororo of Cabaçal, which has been documented by Johann Natterer and Francis de Castelnau, has been identified by Camargo (2014) as a separate language distinct from Bororo proper. Vocabulary. Loukotka (1968) lists the following basic vocabulary items. Proto-language. For a list of Proto-Bororo reconstructions by , see the corresponding . External relations. The Bororoan languages are  commonly thought to be part of the Macro-Jê language family. Ceria & Sandalo (1995) note parallels between Bororo and the Guaicuruan languages. Kaufman (1994) has suggested a relationship with the Chiquitano language, which Nikulin (2020) considers to be a sister of Macro-Jê. Furthermore, Nikulin (2019) has suggested that Bororoan has a relationship with the Cariban and Kariri languages: An automated computational analysis (ASJP 4) by Müller et al. (2013) also found lexical similarities between Bororoan and Cariban. Language contact. Jolkesky (2016) notes that there are lexical similarities with the Guato, Karib, Kayuvava, Nambikwara, and Tupi language families due to  contact. Cariban influence in Bororoan languages was due to the later southward expansion of Cariban speakers into Bororoan territory. Ceramic technology was also adopted from Cariban speakers. Similarly, Cariban borrowings are also present in the Karajá languages. Karajá speakers had also adopted ceramic technology from Cariban speakers. Similarities with Cayuvava are due to the expansion of Bororoan speakers into the Chiquitania region.