Omagua (Agua, Anapia, Ariana, Cambeba, Cambeeba, Cambela, Campeba, Canga-Peba, Compeva, Janbeba, Kambeba, Macanipa, Omagua-Yete, Pariana, Umaua, Yhuata, ) is a Tupi-Guarani language closely related to Cocama, and by a number of semi-speakers near the towns of Coari and Tefé in Brazil, where the language is known as Cambeba (Grenand and Grenand 1997).
Genesis
Comparative work by (1996) demonstrated that Omagua (and its sister language Cocama) exhibit significant grammatical restructuring effects due to intense language contact between a Tupí-Guaraní language and speakers of one or more non-Tupí-Guaraní languages. Rodrigues and Cabral (2003) further suggest that Cocama (and by extension, Omagua) could be considered the outcomes of rapid creolization. Cabral (1996) argued that this language contact transpired in the late 17th century in Jesuit mission settlements, while Michael (2014) argues that the language contact situation responsible for the genesis of Omagua and Cocama transpired during the Pre-Columbian period.
Phonology
Consonants
{| class="wikitable" style="text-align:center"
|+ Consonants of Omagua
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! Bilabial
! Alveolar
! Post-<br>alveolar
! Palatal
! Velar
! Labial-<br>velar
! Uvular
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! Plosive
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! Nasal
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! Sibilant affricate
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! Sibilant fricative
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! Approximant
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! Tap/flap
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Omagua has thirteen consonants across five places of articulation. /ts/ and /tʃ/ only occur in a small number of words: /tʃ/ may have entered the inventory through loanwords from Cocama or Quechua.
Vowels
{| class="wikitable" style="text-align:center"
|+ Vowels of Omagua
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! Front
! Near-front
! Central
! Back
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! Close
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! Near-close
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! Open
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Omagua has five vowels: /i, ɪ, ɨ, u, a/. This is somewhat unusual, as there are four high vowels but only one low vowel (/a/).