Where does “kaftancı” come from?

kaftancı (Ottoman Turkish) comes from Turkish -cı, from Ottoman Turkish ـچی, from Proto-Turkic -či — Profession suffix.

Ancestry of “kaftancı”, step by step

StepLanguageWordMeaning
1Turkish-cıSuffix appended to words to create a noun...
2Ottoman Turkishـچی—
3Proto-Turkic-čiProfession suffix
Every word from Proto-Turkic -či →Every word from Turkish -cı →Every word from Ottoman Turkish ـچی →