The Universal Atlas of Phonetic Evolution
Back to Matrix [h] → [ə] Edit this Data

[ə]→[h]Certainty: 5/5Commonality: 4/5

Mid central vowel to Voiceless glottal fricative

The shift from the neutral schwa [ə] to the glottal fricative [h] represents extreme vowel reduction and devoicing. In rapid or 'connected' speech, particularly when placed between two voiceless obstruents, the schwa loses its vocal fold vibration entirely, leaving only the friction of air passing through the glottis.

Phonetic Effects

Devoicing, Vowel Reduction, Aspiration

Language Examples

potato [pə]→[pʰˈteɪtoʊ]— The first schwa is frequently devoiced, sounding like a brief puff of aspiration.

Related Transformations

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