깨끗하다 Korean adjective conjugation
to be clean
Every form of 깨끗하다 across the four speech levels. It is 여 irregular — 하다 and every verb built on it: 하다 → 하여 → 해요.
기본형Principal parts
The four forms the dictionary prints. Every other form on this page is derived from them.
- 관형사형Modifier
- 깨끗한
- 아/어Infinitive
- 깨끗해
- -으니Since
- 깨끗하니
- 합니다Formal
- 깨끗합니다
현재Present
The tense that does the most work. 해요체 is the one to learn first — it is polite without being formal, and it is what most conversation is in.
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 서술Statement | 깨끗해요 | 깨끗합니다 | 깨끗해 | 깨끗하다 |
과거Past
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 서술Statement | 깨끗했어요 | 깨끗했습니다 | 깨끗했어 | 깨끗했다 |
미래·추측Future & presumptive
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| -겠-Will / must be | 깨끗하겠어요 | 깨끗하겠습니다 | 깨끗하겠어 | 깨끗하겠다 |
| -을 것이다Going to | 깨끗할 거예요 | 깨끗할 것입니다 | 깨끗할 거야 | 깨끗할 것이다 |
의문Questions
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 현재Present | 깨끗해요? | 깨끗합니까? | 깨끗해? | 깨끗하니? |
| 과거Past | 깨끗했어요? | 깨끗했습니까? | 깨끗했어? | 깨끗했니? |
부정Negation
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 안Not (short) | 안 깨끗해요 | 안 깨끗합니다 | 안 깨끗해 | 안 깨끗하다 |
| -지 않다Not (long) | 깨끗하지 않아요 | 깨끗하지 않습니다 | 깨끗하지 않아 | 깨끗하지 않다 |
높임Honorific
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 현재Present | 깨끗하세요 | 깨끗하십니다 | 깨끗하셔 | 깨끗하시다 |
| 과거Past | 깨끗하셨어요 | 깨끗하셨습니다 | 깨끗하셨어 | 깨끗하셨다 |
관형사형Modifying a noun
- 현재Present
- 깨끗한
- 과거Past
- 깨끗한
- 미래Future
- 깨끗할
- 회상Used to
- 깨끗하던
연결Joining clauses
- -고and
- 깨끗하고
- -게-ly / so that
- 깨끗하게
- -어서so / and then
- 깨끗해서
- -으니까since
- 깨끗하니까
- -으면if / when
- 깨끗하면
- -지만but
- 깨끗하지만
- -는데and / but (setting up)
- 깨끗한데
- -어도even if
- 깨끗해도
문형Sentence patterns
How the dictionary says this verb is used. The numbers are slots: 1 is the subject, 2 the object.
- 1이 깨끗하다
예문In real sentences
From the dictionary, each with its translation.
전 좋은 여자예요, 깨끗하다고요
I'm a good girl. Clean.
결국에는 자기 손 깨끗하자고 다른 사람을 죽게 만드는 거 아닌가?
Is it not, in the end, selfish to keep one's hands clean at the expense of another's life?
정말 깨끗하네
Well, it's very clean.
아주 깨끗해요
It's very clean.
자주 묻는 질문Common questions
How do you conjugate 깨끗하다 in Korean?
깨끗하다 (to be clean) is 깨끗해요 in the polite 해요체, 깨끗합니다 in formal 합니다체, 깨끗해 in casual 반말 and 깨끗하다 in the plain written style. The past is 깨끗했어요.
What is the past tense of 깨끗하다?
깨끗했어요 in everyday polite speech, 깨끗했습니다 formally. It is built from the 아/어 form 깨끗하여 plus ㅆ, which is why an irregular stem shows its irregularity here.
Is 깨끗하다 irregular?
Yes — it is 여 irregular (여 불규칙). 하다 and every verb built on it: 하다 → 하여 → 해요. That is why the stem looks different in 깨끗하여 and 깨끗하니 but unchanged in 깨끗합니다.
What TOPIK level is 깨끗하다?
1급 — TOPIK 1, beginner.
Dictionary form, meaning, sentence patterns, examples and audio from the 국립국어원 한국어기초사전, used under CC BY-SA 2.0 KR.
Conjugations are generated by this site's own engine and checked against the 9,380 forms the dictionary publishes on every build.