Ts-ch merger

In phonology, the ts–ch merger is the merger of the voiceless alveolar affricate /ts/ and the voiceless postalveolar affricate /tʃ/.

In Russian, it is the merger of the consonants rendered by letters Che and Tse. If the shift is towards Tse, it is called tsokanye (Russian: цоканье); the shift towards Che is called chokanye (Russian: чоканье).

It is a regular sound change of Lower Sorbian, but not Upper Sorbian, as seen in the difference between Lower Sorbian and Upper Sorbian , both meaning "time".

In Polish language the /tʃ/ → /ts/ merger is part of a more general dialectal feature called Mazurzenie present in many Polish dialects, named for the Masovian dialect.

It also occurs in a few areas of the Chakavian dialect of Croatian, known as tsakavism.

The sabesdiker losn feature of Northeastern Yiddish includes the /tʃ/ → /ts/ merger.

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