Where does “굽이굽이” come from?

굽이굽이 (Korean) comes from Korean 굽이, from Korean 山, from Middle Chinese 山.

Ancestry of “굽이굽이”, step by step

StepLanguageWordMeaning
1Korean굽이a turn, bend of a river, road, etc., curve of a street, etc
2Korean山—
3Middle Chinese山—
Every word from Middle Chinese 山 →Every word from Korean 山 →Every word from Korean 굽이 →
굽이굽이 — Etymology, Origin & Word History | Etymology Explorer