From Wiktionary, the free dictionary
Of native Korean origin, related to 다르다 (dareuda) and Hamgyong dialectal 따다 (ttada).
떠다 • (tteoda) (infinitive 떠어, sequential 떠니)
- Russia form of 내리다 (naerida, “different”).
"아이 기래도 쪼끔 떠겠지", 라며 자꾸 물어보지. (Koryo-mar, Tashkent)- Ai giraedo jjokkeum tteogetji, ramyeo jakku mureoboji.
- But he kept on asking, saying, "hey but it must be a bit different'