unnie/ˈʌni/EtymologyBorrowed from Korean 언니 (eonni, “older sister of a woman”).unnie means an affectionate term of address for an older sister or somewhat older woman. Lexicurio rates it Sui generis — a strength score of 100 out of 100.nounAn affectionate term of address for an older sister or somewhat older woman.An older female member of an idol group.