Aché, also known as Guayaki, is a Guarani language of Paraguay with three living dialects: Ache gatu, Ache wa, and Ñacunday River Ache. The Ñacunday River dialect has low mutual intelligibility with the other two dialects.
| +Aché vowels ! !Front vowel !Central vowel !Back vowel |
| +Aché consonants ! colspan="2" | ! Bilabial ! Alveolar ! Palatal ! Velar consonant ! Glottal |
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