Korean family vocabulary trips up nearly every learner. The reason: Korean family terms depend on your own gender and the relative age of the family member. Not just the relationship itself.
The core sibling terms
This is where it gets interesting:
| Relationship | Term used by females | Term used by males |
|---|---|---|
| Older brother | 오빠 (oppa) | 형 (hyeong) |
| Older sister | 언니 (eonni) | 누나 (nuna) |
| Younger sibling (either) | 남동생 (younger brother) / 여동생 (younger sister) | same |
So a female speaker calls her older brother 오빠, while a male speaker calls his older brother 형: This is why 오빠 in K-pop fandom means a female fan addressing a male idol she sees as an older-brother figure.
Nuclear family
| Relationship | Korean | Pronunciation |
|---|---|---|
| Father | 아버지 (formal) / 아빠 (casual) | abeoji / appa |
| Mother | 어머니 (formal) / 엄마 (casual) | eomeoni / eomma |
| Son | 아들 | adeul |
| Daughter | 딸 | ttal |
| Husband | 남편 | nampyeon |
| Wife | 아내 (formal) / 와이프 (casual) | anae / waipeu |
Extended family: parents' siblings
| Relationship | Korean |
|---|---|
| Father's older brother | 큰아버지 |
| Father's younger brother | 삼촌 |
| Father's older brother's wife | 큰어머니 |
| Father's younger brother's wife | 숙모 |
| Father's sister | 고모 |
| Father's sister's husband | 고모부 |
| Mother's brother | 외삼촌 |
| Mother's sister | 이모 |
| Mother's sister's husband | 이모부 |
This looks overwhelming. In practice, many Koreans simply use 삼촌 for most uncles and 이모/고모 depending on whether it's the mother's or father's side.
Grandparents
| Relationship | Korean |
|---|---|
| Paternal grandmother | 할머니 |
| Paternal grandfather | 할아버지 |
| Maternal grandmother | 외할머니 |
| Maternal grandfather | 외할아버지 |
외 (外) prefix = maternal (outside the family name lineage)
Talking about vs talking to family members
Korean uses different words depending on whether you're talking to or talking about family:
Talking to your mother: 엄마! / 어머니! Talking about your mother to others: 저희 어머니는.. (our mother is...)
Note: 저희 (our, humble form of 우리) is used when talking about your family to outsiders. It's more respectful.
Social extended use
These terms extend beyond blood family in Korean culture:
언니/오빠/형/누나 are used between close friends when there's an age difference.
아저씨 (ajossi) = middle-aged man (like calling someone "mister" or "uncle") 아줌마 (ajumma) = middle-aged woman (informal, can feel rude if the person is sensitive about age) 할아버지/할머니 = elderly man/woman (respectful when addressing strangers)
Using these correctly shows cultural awareness. Using 아줌마 with the wrong person can cause offense.
Family vocabulary is often covered early in Korean courses, but the gendered sibling system surprises most learners. Understanding the cultural logic behind it. The importance of relative age and hierarchy: makes it easier to remember.
A structured Korean course introduces family vocabulary in cultural context, which is how Korean children actually learn these distinctions.