The Universal Atlas of Phonetic Evolution
Back to Matrix [ei] → [ou] Edit this Data

[ou]→[ei]Certainty: 4/5Commonality: 3/5

Diphthong ou to Diphthong ei

The diphthong /ou/, characterized by its back and rounded articulation, can undergo a phonetic transformation to /ei/, a front and unrounded diphthong. This sound change involves a significant shift in the place of articulation from the back to the front of the mouth, coupled with the loss of lip rounding for both components of the diphthong. Such a transformation represents a notable rearticulation of the vowel space.

Phonetic Effects

Fronting, Unrounding

Language Examples

hous→heis— This shift occurs as part of the plural formation for certain nouns, where the vowel change from /ou/ to /ei/ is observed in the plural form.

Related Transformations

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