Szadzenie (Polish: [ʂaˈd͡zɛɲɛ]) is a regional phonological feature of the Polish language. It consists in replacement or merger of dental affricates /t͡s/, /d͡z/ (c, dz) and dental fricatives /s/, /z/ (s, z) into their retroflex counterparts i.e. retroflex affricates /t͡ʂ/, /d͡ʐ/ (cz, dż) and retroflex fricatives /ʂ/, /ʐ/ (sz, ż), respectively. Szadzenie is an example of hypercorrection and exaggerated avoidance of Mazurzenie which is phonetically marked as rural and incorrect. The phenomena occurs in the dialects which border with dialects where mazurzenie occurs, for instance Suwałki Region.