The Universal Atlas of Phonetic Evolution
Back to Matrix [u] → [x] Edit this Data

[x]→[u]Certainty: 4/5Commonality: 3/5

Voiceless velar fricative to Close back rounded vowel

The transformation of the voiceless velar fricative [x] into the high back rounded vowel [u] is a form of vocalization and vowel coloring, typically occurring in syllable-final positions or as a result of historical sound shifts where posterior fricatives become vocalic glides.

Phonetic Effects

Vocalization, Vowel Coloring, Backing, Rounding

Language Examples

Old English [x/ç]→[u/ʊ/ɔ]— Historical shifts where velar fricatives (e.g., gh) vocalized into back vowels or diphthongs (e.g., 'tough' [tʌf] via [u] or 'through' [θruː]).
[x] (written as x/h)→[u/y]— Historical relationship between velar fricatives and the following back or front-rounded vowels.

Related Transformations

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