멍청하다 Korean adjective conjugation
foolish, silly, stupid
Every form of 멍청하다 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
- 멍청한
- 아/어Infinitive
- 멍청해
- -으니Since
- 멍청하니
- 합니다Formal
- 멍청합니다
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 | 멍청해요 | 멍청합니다 | 멍청해 | 멍청하다 |
과거Past
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 서술Statement | 멍청했어요 | 멍청했습니다 | 멍청했어 | 멍청했다 |
미래·추측Future & presumptive
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| -겠-Will / must be | 멍청하겠어요 | 멍청하겠습니다 | 멍청하겠어 | 멍청하겠다 |
| -을 것이다Going to | 멍청할 거예요 | 멍청할 것입니다 | 멍청할 거야 | 멍청할 것이다 |
의문Questions
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 현재Present | 멍청해요? | 멍청합니까? | 멍청해? | 멍청하니? |
| 과거Past | 멍청했어요? | 멍청했습니까? | 멍청했어? | 멍청했니? |
부정Negation
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 안Not (short) | 안 멍청해요 | 안 멍청합니다 | 안 멍청해 | 안 멍청하다 |
| -지 않다Not (long) | 멍청하지 않아요 | 멍청하지 않습니다 | 멍청하지 않아 | 멍청하지 않다 |
높임Honorific
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 현재Present | 멍청하세요 | 멍청하십니다 | 멍청하셔 | 멍청하시다 |
| 과거Past | 멍청하셨어요 | 멍청하셨습니다 | 멍청하셨어 | 멍청하셨다 |
관형사형Modifying a noun
- 현재Present
- 멍청한
- 과거Past
- 멍청한
- 미래Future
- 멍청할
- 회상Used to
- 멍청하던
연결Joining clauses
- -고and
- 멍청하고
- -게-ly / so that
- 멍청하게
- -어서so / and then
- 멍청해서
- -으니까since
- 멍청하니까
- -으면if / when
- 멍청하면
- -지만but
- 멍청하지만
- -는데and / but (setting up)
- 멍청한데
- -어도even if
- 멍청해도
문형Sentence patterns
How the dictionary says this verb is used. The numbers are slots: 1 is the subject, 2 the object.
- 1이 멍청하다
예문In real sentences
From the dictionary, each with its translation.
모든 성 중에서, 소년이 가장 멍청하죠.
Of all the genders, boys are the stupidest.
넌 이게 멍청한 짓 같아?
You think it's stupid?
내가 그렇게 멍청할 수 있지.
How could I have been so stupid.
네 멍청한 얼굴 보는 거 못 참겠어
I can't stand looking at your stupid face.
자주 묻는 질문Common questions
How do you conjugate 멍청하다 in Korean?
멍청하다 (foolish, silly, stupid) is 멍청해요 in the polite 해요체, 멍청합니다 in formal 합니다체, 멍청해 in casual 반말 and 멍청하다 in the plain written style. The past is 멍청했어요.
What is the past tense of 멍청하다?
멍청했어요 in everyday polite speech, 멍청했습니다 formally. It is built from the 아/어 form 멍청하여 plus ㅆ, which is why an irregular stem shows its irregularity here.
Is 멍청하다 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 멍청하여 and 멍청하니 but unchanged in 멍청합니다.
What TOPIK level is 멍청하다?
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.