누나
nuna · TOPIK 1
older sister (of a male)
👧 A boy calls his big sis: noona, noona — like nagging her for a new nap
누나 (nuna, often romanised noona) is what a male calls his older sister or a close older woman. A female speaker says 언니 (eonni) instead. Sound hook: nu-na echoes nanny, the older girl who looks after the boy.