납작하다 Korean adjective conjugation
to be flat
Every form of 납작하다 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
- 납작한
- 아/어Infinitive
- 납작해
- -으니Since
- 납작하니
- 합니다Formal
- 납작합니다
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 | 납작해요 | 납작합니다 | 납작해 | 납작하다 |
과거Past
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 서술Statement | 납작했어요 | 납작했습니다 | 납작했어 | 납작했다 |
미래·추측Future & presumptive
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| -겠-Will / must be | 납작하겠어요 | 납작하겠습니다 | 납작하겠어 | 납작하겠다 |
| -을 것이다Going to | 납작할 거예요 | 납작할 것입니다 | 납작할 거야 | 납작할 것이다 |
의문Questions
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 현재Present | 납작해요? | 납작합니까? | 납작해? | 납작하니? |
| 과거Past | 납작했어요? | 납작했습니까? | 납작했어? | 납작했니? |
부정Negation
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 안Not (short) | 안 납작해요 | 안 납작합니다 | 안 납작해 | 안 납작하다 |
| -지 않다Not (long) | 납작하지 않아요 | 납작하지 않습니다 | 납작하지 않아 | 납작하지 않다 |
높임Honorific
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 현재Present | 납작하세요 | 납작하십니다 | 납작하셔 | 납작하시다 |
| 과거Past | 납작하셨어요 | 납작하셨습니다 | 납작하셨어 | 납작하셨다 |
관형사형Modifying a noun
- 현재Present
- 납작한
- 과거Past
- 납작한
- 미래Future
- 납작할
- 회상Used to
- 납작하던
연결Joining clauses
- -고and
- 납작하고
- -게-ly / so that
- 납작하게
- -어서so / and then
- 납작해서
- -으니까since
- 납작하니까
- -으면if / when
- 납작하면
- -지만but
- 납작하지만
- -는데and / but (setting up)
- 납작한데
- -어도even if
- 납작해도
문형Sentence patterns
How the dictionary says this verb is used. The numbers are slots: 1 is the subject, 2 the object.
- 1이 납작하다
예문In real sentences
From the dictionary, each with its translation.
또 납작한 손잡이네요
Another flat handle.
그게 납작하면 안전한 거지?
If it's flat, we're safe now, aren't we?
손잡이를 납작하게 만들었어요
They've flattened the handle.
신경계를 확대해서 납작하게 만든 거군
That is a nervous system. Scaled up and flattened.
자주 묻는 질문Common questions
How do you conjugate 납작하다 in Korean?
납작하다 (to be flat) is 납작해요 in the polite 해요체, 납작합니다 in formal 합니다체, 납작해 in casual 반말 and 납작하다 in the plain written style. The past is 납작했어요.
What is the past tense of 납작하다?
납작했어요 in everyday polite speech, 납작했습니다 formally. It is built from the 아/어 form 납작하여 plus ㅆ, which is why an irregular stem shows its irregularity here.
Is 납작하다 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 납작하여 and 납작하니 but unchanged in 납작합니다.
What TOPIK level is 납작하다?
5급 — TOPIK 5, advanced.
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.