.mw-parser-output .hidden-begin{box-sizing:border-box;width:100%;padding:5px;border:none;font-size:95%}.mw-parser-output .hidden-title{font-weight:bold;line-height:1.6;text-align:left}.mw-parser-output .hidden-content{text-align:left}@media all and (max-width:500px){.mw-parser-output .hidden-begin{width:auto!important;clear:none!important;float:none!important))You can help expand this article with text translated from the corresponding article in Portuguese. (May 2022) Click [show] for important translation instructions. View a machine-translated version of the Portuguese article. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Consider adding a topic to this template: there are already 1,527 articles in the main category, and specifying|topic= will aid in categorization. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Portuguese Wikipedia article at [[:pt:Língua rikbaktsa]]; see its history for attribution. You may also add the template ((Translated|pt|Língua rikbaktsa)) to the talk page. For more guidance, see Wikipedia:Translation.
Native toBrazil
RegionMato Grosso
Ethnicity1,140 Rikbaktsa people (2006)[1]
Native speakers
40 (2010)[1]
  • Rikbaktsá
Language codes
ISO 639-3rkb

The Rikbaktsa language, also spelled Aripaktsa, Erikbatsa or Erikpatsa and known ambiguously as Canoeiro, is a language spoken by the Rikbaktsa people of Mato Grosso, Brazil, that forms its own branch of the Macro-Gê languages.

As in other languages of the area, word endings indicate the gender of the speaker.[2] Rikbaktsa is a subject-object-verb language.[1]

Most Rikbaktsa can speak both Rikbaktsa and Portuguese. Younger individuals tend to speak Portuguese more frequently and fluently than their elders, but older individuals generally struggle with Portuguese and use it only with non-indigenous Brazilians.[2]

Jolkesky (2016) also notes that there are lexical similarities with the Cariban languages.[3]


The 22nd edition of Ethnologue reports that it is spoken around confluence of the Sangue River and Juruena River in:


Front Central Back
Close i ɨ u
Close-mid e o
Mid ə
Open a
Nasal vowels
Front Central Back
Close ĩ ɨ̃ ũ
Close-mid õ
Mid ə̃
Open ã
Labial Alveolar Palato-
Retroflex Palatal Velar Glottal
Stop voiceless p t k (ʔ)
voiced b d
Affricate t͡ʃ
Fricative ʃ h
Nasal m n
Approximant w j
Flap ɾ ɽ


Loukotka (1968) lists the following basic vocabulary items.[5]

gloss Erikbaktsa
one aistuːba
ear ka-spi
tooth írata
hand ka-shuisha
woman matutsi
water pihʔik
fire idoː
stone harahairi
maize uanátsi


  1. ^ a b c Rikbaktsá at Ethnologue (18th ed., 2015) (subscription required)
  2. ^ a b Arruda, Rinaldo S.V. "Rikbaktsa: Language." In Encyclopedia of Indigenous Peoples in Brazil. Instituto Socioambiental (November 1998).
  3. ^ Jolkesky, Marcelo Pinho de Valhery (2016). Estudo arqueo-ecolinguístico das terras tropicais sul-americanas (Ph.D. dissertation) (2 ed.). Brasília: University of Brasília.
  4. ^ Silva, Leia de Jesus (2005). Aspectos da fonologia e a morfologia da língua Rikbaktsa. Universidade de Brasília.
  5. ^ Loukotka, Čestmír (1968). Classification of South American Indian languages. Los Angeles: UCLA Latin American Center.