🙇 Address & Relationships
선배
A senior at your school, workplace, or industry — someone who entered before you, regardless of their actual age. Both men and women use it, usually with the honorific suffix as "sunbaenim." The junior counterpart is "hoobae."
Literally: From the Sino-Korean 先輩, literally "one who came before" — the same characters as the Japanese "senpai."
선배님 무대 보면서 가수의 꿈을 키웠어요.
Sunbaenim mudae bomyeonseo gasuui kkumeul kiwosseoyo.
→ Watching your performances, sunbaenim, is what made me dream of becoming a singer.
In K-pop, groups that debuted earlier are sunbaes: rookie idols bow deeply and say "sunbaenim" to them on music shows, and failing to do so becomes an attitude scandal. In school and office dramas it structures every relationship. Politeness caveat: dropping the -nim to a senior's face, or treating a sunbae as an equal, reads as disrespectful.
Oppa 오빠
The word a woman or girl uses for her older brother — and, by extension, for any older male she feels close to, including older male friends and boyfriends. Only female speakers use it; a man addressing an older man says "hyung" instead. Because it signals warmth and closeness, calling a non-relative "oppa" carries a flirtatious or affectionate undertone.
Unnie 언니
What a woman or girl calls her older sister, or an older female friend she's close to. It's strictly for female speakers; a man addressing an older woman says "noona" instead. It conveys affection and a sister-like bond rather than formality.
Hyung 형
What a man or boy calls his older brother, or an older male friend he's close to. It's for male speakers only; women use "oppa" for older males. Adding -nim ("hyungnim") makes it more deferential — or, in crime dramas, is how gang members address the boss.
Noona 누나
What a man or boy calls his older sister, or an older female friend he's close to. It's for male speakers only; women say "unnie" for older women. Like "oppa," it can carry romantic potential when used toward a non-relative.
Hoobae 후배
A junior at your school, workplace, or industry — someone who entered after you, regardless of age. It's mostly used to describe the relationship rather than to address someone: you'd say "she's my hoobae," but call the person by their name. The senior counterpart is "sunbae."
Dongsaeng 동생
A younger sibling, or a younger close friend you treat like one — used by any gender about any gender. Like "hoobae," it's mainly referential: you describe someone as your dongsaeng but address them by name. Add yeo- (여동생) for a younger sister or nam- (남동생) for a younger brother.
Usage and nuance shift over time and between communities — treat this as a field guide, not a law book.