Chinese Family Terms: The Complete Guide to Aunts, Uncles, and Cousins

Your Chinese friend introduces you to their 阿姨. Ten minutes later, someone else gets introduced as their 姑姑. Both get translated to you as “aunt,” and you file them away as the same word said twice, until you notice your friend never mixes the two up, never has to think about which one to use, and would find it genuinely strange if you asked whether they meant the same person. They don’t. 阿姨 is specifically your mother’s sister. 姑姑 is specifically your father’s sister. English collapsed both into one word two centuries ago and never looked back. Chinese never collapsed them at all.

That gap is the whole subject of this guide: not a quirky vocabulary list, but a full second axis of information, whose side of the family, that English kinship words simply don’t carry. Once you can see the axis, the thirty-odd terms below stop looking like an arbitrary pile and start looking like a small, consistent system with about six moving parts, laid out here with a family tree diagram for every generation.

Why does Chinese have so many words for family?

The honest answer is that Chinese kinship terms encode three variables English throws away: which side of the family (father’s or mother’s), relative age (older or younger than the connecting parent, or than you), and blood versus marriage. English “aunt” answers none of those questions. Chinese 姑姑 answers all three at once: father’s side, sister rather than brother, and by blood. This isn’t decorative complexity. Historically, exactly which relative someone was determined real obligations: who stood to inherit what, who was formally responsible for whom, and how deep a mourning obligation you owed a relative when they died. A term that sounds needlessly specific today was, for most of Chinese history, load-bearing information.

Grandparents, and the character that marks “through a woman”

Look closely at the maternal pair and one character explains a pattern that runs through the rest of this guide: 外 (wài), “outside.” Your mother’s parents are literally “outside grandfather” and “outside grandmother,” not because anyone is being unkind, but because traditional Chinese kinship was patrilineal: descent and family membership passed through fathers, so a mother’s own family was, on paper, outside the family line. That single character will come back twice more in this guide, in a completely different generation each time, and both times it will mean exactly the same thing: this relative connects to you through a woman.

Your parents’ siblings: aunts and uncles

Here is where the system starts rewarding attention instead of punishing it. Father’s siblings split by birth order relative to him; mother’s siblings don’t.

Four siblings, four different terms, and only the brothers get split by age: 伯伯 for an older brother, 叔叔 for a younger one. 姑姑 covers a sister of any age, older or younger than your father, with no separate word for each. Their spouses get their own terms too: 伯母 (bómǔ) for 伯伯’s wife, 婶婶 (shěnshen) for 叔叔’s wife, 姑父 (gūfu) for 姑姑’s husband.

Mother’s side works differently: no birth-order split at all.

舅舅 covers any maternal uncle, 阿姨 any maternal aunt, neither split by age the way 伯伯/叔叔 are. Their spouses: 舅妈 (jiùmā) for 舅舅’s wife, 姨父 (yífu) for 阿姨’s husband. One asymmetry is worth naming directly: only father’s brothers get the elder/younger split built into the base word. Father’s sister, and both of mother’s siblings, don’t, not because those relationships matter less, but because the split tracked something specific to patrilineal inheritance among brothers, which none of the other three relationships shared. 阿姨 has a second life outside the family tree entirely: it’s the everyday, friendly way to address almost any adult woman roughly your parents’ age, a stranger, a shopkeeper, a friend’s mother, the way “auntie” works as a warm form of address in some English dialects too.

Cousins: where 堂 and 表 actually split

This is the part that looks intimidating and is actually the most mechanical rule in the whole system. It has nothing to do with which specific aunt or uncle; it has everything to do with whether the connecting relative is a man who kept the family name.

堂 (táng) means, roughly, “of the same hall,” the same patrilineal household. It applies to exactly one relationship: your father’s brother’s children, the cousins who traditionally shared your surname and your place in the family register. 表 (biǎo) means “outer,” and it covers every other cousin without distinction, your father’s sister’s kids, your mother’s brother’s kids, and your mother’s sister’s kids all get the same 表 prefix, because all three connect to you through a woman rather than through your father’s own brothers. It’s the same 外 logic from the grandparents section, one more generation down, wearing a different character.

堂 marks a cousin who shares your patrilineal household. 表 marks everyone who doesn't, regardless of which side of the family they're actually on.

Your own generation, and the next one down

Siblings split the same way father’s brothers did, by age, but here it applies to everyone:

There is no single word for “sibling” the way English has one; you need the compound 兄弟姐妹 (xiōngdì jiěmèi), literally “older-brothers younger-brothers older-sisters younger-sisters,” to talk about siblings collectively at all. And the 外/表 logic makes one final appearance, at the generation below yours:

A brother’s children are 侄子/侄女, no 外 anywhere in sight. A sister’s children get 外甥/外甥女, the same “outside” character that opened this guide at the grandparents’ generation. Three separate generations, three completely different relationships, one character doing the same job every time: marking that the connection runs through a woman rather than a man.

How to actually learn 30 kinship terms

Thirty words is a lot to hold at once, but almost none of it is arbitrary once the system is visible.

1. Learn 外 first, as a single idea, not four separate words. 外公, 外婆, 表哥/表姐/表弟/表妹 (partly), and 外甥/外甥女 all carry it for the same reason: they connect to you through a woman. One concept, four appearances.
2. Learn the one real exception: only father’s brothers split by age (伯伯 vs 叔叔). Everyone else, 姑姑, 舅舅, 阿姨, covers any age with one word.
3. Learn 堂 vs 表 as a single yes/no question: is this cousin descended from your father’s brother? Yes is 堂. Anything else, including your father’s own sister’s kids, is 表.
4. Drill the spouse terms last, 伯母/婶婶/姑父/舅妈/姨父, since they’re the most arbitrary-feeling and benefit most from spaced repetition rather than logical grouping.

Merry Mandarin’s FSRS-5 review engine drills all thirty terms as flashcards, and because the reading library surfaces real family vocabulary inside stories and dialogues rather than only in isolated card form, the terms get reinforced in the kind of sentence where you’d actually meet a 表哥 or a 姑姑 in real conversation, not just on a flashcard.