언니 (unni)
Used by females to address an older female — biological older sister, older female friend, or favorite female celebrity.
- Meaning: Used by females to address an older female — biological older sister, older female friend, or favorite female celebrity.
- Pronunciation: /ʌn.ɲi/ (unni)
- Part of speech: noun (kinship / address term)
- Formality: Casual — for friends, family, and close peers.
- Literal: older sister (used by females)
What does 언니 mean?
Unni (언니) means "older sister," but only a female speaker uses it — to address any older female she is close to: her real older sister, an older female friend, a favorite female idol, or even a slightly older woman at a shop or salon. Men do not say 언니; they say 누나 (noona).
언니 (unni, sometimes romanized "eonni") is the female-to-female counterpart of 오빠. A girl or woman uses 언니 to address any older female she is close to: actual older sister, older female friend, female cousin, or — in fandom — older members of K-pop girl groups. Outside fandom, women also use 언니 to politely address slightly older female strangers in casual contexts (a salon stylist, a market vendor) — Korean has no neutral "ma'am" for younger women, so 언니 fills that gap. It conveys warmth and respect without sounding stiff. Men do NOT use 언니 — they say 누나 (noona) instead.
Examples in context
For a real older sister (친언니)
The original kinship sense. Add 친 (chin-) to make "biological older sister" explicit.
For an older female friend or coworker
Used for a known, close older female — prefix her name to be specific.
For a slightly older female stranger (service settings)
Korean lacks a neutral "miss" for younger women, so 언니 is the friendly default at salons, markets, and cafes.
In K-pop fandom (for a female idol)
Female fans call older female idols 언니 — the girl-crush register of affectionate closeness.
As a friendly closeness marker
Switching TO 언니 (from a name or 씨) signals you want a warmer, closer relationship.
언니in K-pop & K-drama
K-pop fandom: "unni" for female idols
Female fans call older girl-group members 언니, framing them as warm, admired older sisters. It is the female-fan equivalent of calling a male idol 오빠, and it underpins the "걸크러시" (girl crush) appeal that confident female idols cultivate with their fanbase.
The friendly stranger-address
Because Korean has no casual, neutral "miss" or "ma'am" for a younger woman, 언니 fills the gap: customers address slightly older female shopkeepers, stylists, and market vendors as 언니 to sound friendly rather than stiff. Misjudging the age — calling a clearly much older woman 언니 — can backfire, so it is reserved for women only modestly older than the speaker.
Variety TV: the "센 언니" trope
Korean variety and music shows celebrate the "센 언니" (strong unni) — a confident, charismatic older woman. The 2016 KBS show "Sister's Slam Dunk" (언니들의 슬램덩크) even formed a real project group, 언니쓰 (Unnies), built entirely around this big-sister energy.
When to use 언니
- Female speaker addressing an older female (sister, friend, cousin)
- Talking about a female idol you admire (K-pop fandom)
- Polite-friendly address to a slightly older female stranger in casual settings
- Workplace if rapport is established and the company culture is informal
When NOT to use 언니
- Male speakers — use 누나 (noona) instead
- Formal business or interview settings
- A woman much older than you (use 이모 imo or 아주머니 ajumeoni)
- Strangers in formal contexts
언니 vs. similar terms
The four older-sibling address terms — and where 언니 fits
| Term | Speaker | Addressee | Literal meaning | Typical use |
|---|---|---|---|---|
| 언니 (unni) | Female | Older female | older sister | sister, friend, female idol |
| 오빠 (oppa) | Female | Older male | older brother | brother, boyfriend, male idol |
| 누나 (noona) | Male | Older female | older sister | sister, older partner |
| 형 (hyung) | Male | Older male | older brother | brother, mentor, teammate |
Related terms
More in Honorifics
Address older / younger / unrelated adults the way native speakers do.
Used by females to address an older male — biological older brother, older male friend, romantic partner, or favorite male celebrity.
Used by males to address an older male — biological older brother, older male friend, mentor, or older teammate.
Used by males to address an older female — biological older sister, older female friend, or older female romantic partner.
A casual address term for a middle-aged or older man you do not know — roughly "mister" or "uncle," though tone determines whether it sounds friendly or rude.
Frequently asked questions
What does 언니 (unni) mean in Korean?
언니 (unni) means "older sister" but is used by female speakers only — to address any older female they are close to: actual older sister, older female friend, cousin, or favorite female celebrity. Men do not say 언니; they use 누나 (noona) instead.
Can men say 언니?
No. 언니 is for female speakers only. A man addressing an older woman would say 누나 (noona). Saying 언니 as a male would sound very strange or feminine.
Is 언니 the same as 누나?
They both mean "older sister" but differ by speaker gender. Women say 언니 to older females; men say 누나 to older females. The age/relationship rules are identical — only the speaker's gender changes.
How do you spell 언니 in romanization?
Common romanizations are "unni" (most popular in K-pop fandom) and "eonni" (Revised Romanization, official Korean government style). Both refer to the same word [ʌn.ɲi].
Can I call a stranger 언니?
Yes, in casual service settings — a slightly older female server, shop clerk, or hairdresser is commonly addressed as 언니 to sound friendly. Avoid it in formal contexts or with a woman much older than you, where 이모 (imo) or 아주머니 (ajumeoni) fits better.
Do K-pop fans call female idols 언니?
Yes. Female fans call older female idols 언니 — the same affectionate closeness male idols get with 오빠. It is central to "girl crush" fandom, where fans look up to a charismatic older female member as a cool big sister.
Further reading
External references for cross-checking the information on this page.
- Korean kinship — Wikipedia
Female-to-female and family-relationship address terms including 언니.
More Korean slang?
Browse the full Korean Slang Dictionary or read the deep-dive: Korean Slang Ultimate Guide.