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

[oi]→[ə]Certainty: 3/5Commonality: 2/5

Diphthong oi to Mid central vowel

The diphthong [ɔɪ] reduces to schwa [ə] in unstressed syllables through stress-conditioned vowel reduction. This phonetic process reflects the natural simplification of diphthongs to the unmarked schwa vowel in weak prosodic positions.

Phonetic Effects

Centralization, Vowel Reduction

Language Examples

[bɔɪ]→[bə]— Words like 'boy' in unstressed contexts may reduce [ɔɪ] to schwa in rapid or casual speech.

Related Transformations

More Germanic Shifts

Sources & References

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