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Wayoró language

endangered language of Brazil

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionAug 10, 2026
Entity authorityQ2875044
Source-derived summary

Wayoró (also Wayoro, Ajurú, Wajuru; Wayoró: wayoro emẽto [βajoˈɾo ɛmɛ̃ˈto]) is a moribund Tuparian language (Tupian family), which is spoken in the state of Rondônia, in the Amazon region of Brazil. As of 2019, there were reported to be 3 speakers (all above 70 years old) and 11 semispeakers out of the ethnic population of approximately 250.

Dialects

The Wajuru people is subdivided into three subgroups: the Ngwayoroiat (‘those from the Stone’), the Ngwãkũyãian (‘the Agouti ones’), and the Kupndiiriat (‘the Forest ones’). Some lexical and phonological differences have been reported between the varieties spoken by the Ngwayoroiat (Wayoroiat) and by the Kupndiiriat.

Phonology

Consonants

The graphemes which correspond to each phoneme are given in ⟨brackets⟩.

Underlying nasal consonants may be partially or fully oralized in oral environments. Nogueira (2019) describes the following allophones:

/m/ → [m] ⟨m⟩, [mb] ⟨mb⟩

/n/ → [n] ⟨n⟩, [nd] ⟨nd⟩

/ɲ/ → [ɲ, j, j̃, jᵗ] ⟨y⟩, [ndʒ, dʒ] ⟨dj⟩

/ŋ/ → [ŋ, ŋg] ⟨ng⟩, [g] ⟨g⟩

/ŋʷ/ → [ŋʷ, ŋgʷ] ⟨ngw⟩, [gʷ] ⟨gw⟩

Vowels

Syntax

As in other Tuparian languages, the main clauses of Wayoró follow the cross-linguistically rare nominative–absolutive pattern. Person prefixes on the verb are absolutive, i.e., they index the sole argument of an intransitive verb (S) and the patient argument ('direct object') of a transitive verb (P). Person pronouns, which follow the verb (either cliticizing to it or not) are nominative: they may encode the sole argument of an intransitive verb (S) or the agent argument of a transitive verb (A), but not the patient of a transitive verb (P). This is exemplified below.

Editorial summary

Begin with the source’s own compact description: “Wayoró language” is endangered language of Brazil. The dossier treats that line as a proposition to test through Wayoró, language and endangered, not as a finished interpretation.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—2019—that can be checked directly. The selected authority fields contribute no independent date. For this dossier, Wayoró, language and endangered is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “endangered language of Brazil” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Aug 10, 2026. The linked authority identifier is Q2875044. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2019.

Critical limits

The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

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Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

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Three-step research path

  1. Establish the record: confirm the title “Wayoró language”, its source revision and the description used here.
  2. Expand the search: follow Wayoró language primary sources, Wayoró language archive and Wayoró research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

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Source & attribution

This entry incorporates text from Wayoró language” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.