[r]→[ʃ]Certainty: 5/5Commonality: 3/5
Alveolar trill to Voiceless postalveolar fricative
The shift from the rhotic [r] to the postalveolar fricative [ʃ] (or its retroflex counterpart [ʂ]) occurs through assibilation and sandhi assimilation. In languages with these shifts, the rhotic merges with a following sibilant to create a single postalveolar fricative.
Phonetic Effects
Assibilation, Retroflexion, Sandhi
Language Examples
mars [rs]→[maʂ] (sounds like mash)— The /r/ and /s/ merge into a single retroflex sibilant, very close to [ʃ].
fors (rapids)→[fɔʂ]
Related Transformations
More Germanic Shifts
Sources & References
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