|San Miguel Tilquiápam|
|Region||Oaxaca in Mexico|
Santa Inés Yatzechi Zapotec is close enough to be considered a dialect, and Ocotlán Zapotec is also close. They were measured at 87% and 59% intelligibility, respectively, in recorded text testing.
Each vowel can also be glottalized, a phenomenon manifested as either creaky voice throughout the vowel or, more commonly, as a sequence of a vowel and a glottal stop optionally followed by an echo of the vowel.
As with other Zapotec languages, the primary distinction between consonant pairs like /t/ and /d/ is not of voicing but between fortis and lenis (measured in length), respectively, with voicing being a phonetic correlate. There are two exceptions to this in Tilquiapan:
Neither is voiceless, but /n?/ is pronounced a little longer and /ld/ replaces /l/ in certain causative verbs in ways similar to other fortis/lenis consonantal changes (e.g. [bla?a] 'get loose' vs. [blda?a] 'let loose').