께서
subject marker — honorific
The respectful replacement for 이/가. Using it commits the rest of the sentence: the verb has to be honorific too.
Build it
Pick a subject
When to use it
께서 marks the subject when that subject deserves respect — a teacher, a parent, a grandparent, a boss, a customer. It takes the place of 이/가 and never appears alongside it.
The important part is what it obliges. Korean honorifics work as a set: once the subject is honoured with 께서, the verb needs -(으)시-, and some verbs switch to special forms — 있다 becomes 계시다, 먹다 becomes 드시다, 자다 becomes 주무시다. 할아버지께서 주무세요.
One absolute rule: never use it about yourself. Honorifics raise other people, so 저께서 or 제가께서 does not exist. Speaking about your own family to an outsider, Korean also tends to lower the register, so 께서 with 우리 엄마 can sound out of place in that situation.
How to attach it
| Situation | Form | Example |
|---|---|---|
| Honorific subject | 께서 | 선생님께서 오셨어요 |
| As topic | 께서는 | 부모님께서는 부산에 계세요 |
| Also, too | 께서도 | 사장님께서도 아세요 |
| Verb must match | -(으)시- | 가시다, 오시다, 하시다 |
| Special verbs | 계시다, 드시다, 주무시다 | 할아버지께서 주무세요 |
| Never for yourself | use 제가 | 제가 하겠습니다 — not 저께서 |
In use
선생님께서 교실에 오셨어요.
The teacher came into the classroom.
할아버지께서 신문을 읽으세요.
Grandfather is reading the newspaper.
부모님께서는 지금 부산에 계세요.
My parents are in Busan at the moment.
사장님께서도 회의에 참석하십니다.
The company president will attend the meeting as well.
어머니께서 아침을 차려 주셨어요.
My mother prepared breakfast for me.
교수님께서 뭐라고 하셨어요?
What did the professor say?
Compared with
이/가
Same grammatical job, different level of respect. 이/가 with an honorific verb is possible and common in casual speech; 께서 raises the formality of the whole sentence.
선생님이 오셨어요. (everyday) / 선생님께서 오셨습니다. (formal)
께
께서 marks the honoured person as the one doing; 께 marks them as the one receiving. One syllable of difference, opposite roles.
선생님께서 주셨어요. (the teacher gave) / 선생님께 드렸어요. (I gave to the teacher)
은/는
To make an honoured subject the topic, stack 는 onto 께서 rather than replacing it. The result is 께서는.
부모님께서는 서울에 계세요. / not 부모님은께서
Watch out
선생님께서 왔어요.
선생님께서 오셨어요.
Honorifics come as a set. Once 께서 marks the subject, the verb needs -(으)시-. A mismatch sounds worse than using no honorific at all.
저께서 하겠습니다.
제가 하겠습니다.
Honorifics raise other people, never the speaker. For yourself, use 제가 and let the verb ending carry the politeness.
선생님께서 책을 드렸어요.
선생님께 책을 드렸어요.
드리다 means the speaker is giving upward, so the teacher is the recipient and takes 께. 께서 would make the teacher the giver.
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