[ʌ]→[ə]Certainty: 5/5Commonality: 5/5
Open-mid back unrounded vowel to Mid central vowel
The shift from the full vowel [ʌ] (the 'strut' vowel) to the mid-central vowel [ə] (schwa) is a classic example of vowel reduction. In stress-timed languages like English, vowels in unstressed syllables lose their peripheral qualities, duration, and distinctiveness, centralizing toward the neutral schwa.
Phonetic Effects
Vowel Reduction, Centralization
Language Examples
up [ʌp]→upon [əˈpɒn]— When the prefix loses stress, the vowel reduces to schwa.
un-→un- [ən-]— Common reduction in rapid speech.
[ʌ] (pre-tonic)→[ə] (post-tonic)— In akan'e, /o/ or /a/ reduces to [ʌ] immediately before stress, then further to [ə] in other unstressed positions (second-degree reduction).
Related Transformations
More Germanic Shifts
Sources & References
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