[x]→[ʃ]Certainty: 5/5Commonality: 5/5
Voiceless velar fricative to Voiceless postalveolar fricative
The shift from the voiceless velar fricative [x] to the voiceless postalveolar fricative [ʃ] (written here 'sh') is a form of palatalization: the place of articulation moves forward from the velum, fronted by an adjacent front vowel or palatal glide. It is the textbook outcome of the Slavic first palatalization and recurs in Yiddish dialectology.
Phonetic Effects
Palatalization, Fronting
Language Examples
*x before front vowel / *j→*š [ʃ]— The first palatalization fronted *x to *š before *e/ē, *i/ī and *j, uniformly across all Slavic. The Germanic loan *helmaz 'helmet' → Proto-Slavic *xelmъ → *šelmъ, giving Old Church Slavonic šlěmъ and Russian шлем. This exactly reverses the ruki retraction of *š to *x.
*x after front vowel→*š [ʃ] (West Slavic)— In the progressive (third) palatalization *x fronts again, with a dialect split: West Slavic gives š, East and South Slavic give s. Proto-Slavic *vьxь 'all' → Czech veš/vše [ʃ] but Russian весь [sʲ].
ikh [ɪx]→[ɪʃ]— In Ukrainian/Galician (Southeastern) Yiddish, the velar/palatal fricative [x/ç] fronted to [ʃ]: Standard 'ikh' [ɪx] 'I' → [ɪʃ]. This is a defining isogloss separating the Yiddish dialect zones.
Related Transformations
More Germanic Shifts
Sources & References
- Shevelov, G. Y. (1964). A Prehistory of Slavic. Carl Winter.
- Carlton, T. R. (1991). Introduction to the Phonological History of the Slavic Languages. Slavica.
- Jacobs, N. G. (2005). Yiddish: A Linguistic Introduction. Cambridge University Press.
- Ladefoged, P., & Maddieson, I. (1996). The Sounds of the World's Languages. Blackwell.
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