Editing Cheyenne language (section)

=== Feature system for phonemes ===
The systematic phonemes of Cheyenne are distinguished by seven two-valued features. Scholar Donald G. Frantz defined these features as follows:{{sfn|Frantz|1972a}}
* Oral: primary articulation is oral (vs. at the glottis)
* Vocoid (voc): central resonant (oral) continuant
* Syllabic (syl): nuclear to syllable (vs. marginal)
* Closure (clos): stoppage of air flow at point of primary articulation ['non-continuant']
* Nasal (nas): velic is open
* Grave (grv): primary articulation at oral extremity (lips or velum) ['non-coronal' for consonants, 'back' for vowels]
* Diffuse (dif): primary articulation is relatively front ['anterior']

{| class="wikitable" style="text-align:center"
! || ʔ || h || a || o || e || m || n || p || k || t || b || s || š || x
|-
! oral
| − || (+) || (+) || (+) || (+) || (+) || (+) || + || + || + || (+) || (+) || (+) || (+)
|-
! voc
| (−) || + || (+) || (+) || (+) || (−) || (−) || (−) || (−) || (−) || − || − || − || −
|-
! syl
| (−) || − || + || + || + || (−) || (−) || (−) || (−) || (−) || (−) || (−) || (−) || (−)
|-
! clos
| (+) || (−) || (−) || (−) || (−) || (+) || (+) || + || + || + || − || − || − || −
|-
! nas
| 0 || (−) || (−) || (−) || (−) || + || + || − || (−) || − || (−) || (−) || (−) || (−)
|-
! grv
| 0 ||  || − || + || (−) || + || − || + || + || − || + || − || − || +
|-
! dif
| 0 ||  || − || − || + || + || (+) || + || − || (+) || + || + || − || −
|}

0 indicates the value is indeterminable/irrelevant. A blank indicates the value is specifiable, but context is required (even though any value could be inserted because the post-cyclical rules would change the value to the correct one). [[Bracket|Parentheses]] enclose values that are redundant according to the phonological rules; these values simply represent the results of these rules.{{sfn|Frantz|1972a}}