final-obstruent devoicing

Also known as consonant softening

phonological process where voiced obstruents become voiceless before voiceless consonants or in pausa; occurs in Catalan, German, Dutch, Breton, Russian, Turkish, Wolof, etc.; e.g.: German Bad [baːt] > Bäder [ˈbɛːdɐ]; Turkish çicek > çiçeği