[o]→[oi]Certainty: 3/5Commonality: 1/5
Close-mid back rounded vowel to Diphthong oi
The diphthongization of the close-mid back rounded vowel /o/ to the diphthong /ɔɪ/ is documented in the historical development of Yiddish, where Middle High German long /oː/ shifted to Standard Yiddish /ɔɪ/ (spelled ⟨oy⟩). This change parallels the broader pattern of long mid vowels becoming diphthongs in Yiddish, diverging from the Standard German development where /oː/ was retained.
Phonetic Effects
Diphthongization, Vowel Breaking
Language Examples
hôch→הױך /hɔɪχ/— High; MHG /oː/ (long close-mid back rounded vowel) became Yiddish /ɔɪ/.
schône→שױן /ʃɔɪn/— Already; another instance of the MHG /oː/ → Yiddish /ɔɪ/ diphthongization.
Related Transformations
More Germanic Shifts
Sources & References
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