The story
- Classical Persian · derived fromخَفْتَان
- Ottoman Turkish · derived fromقفتان
- Russian · borrowed fromкафта́н
- English todaykaftan
Via Russian кафта́н (kaftán), from Ottoman Turkish قفتان (kaftan), from Classical Persian خَفْتَان (xaftān), which occurs already in the Shahnameh.
Etymology from Wiktionary, CC BY-SA 4.0.