멍청하다

foolish, silly, stupid

Principal parts

관형사형Modifier
멍청한
아/어Infinitive
멍청해
-으니Since
멍청하니
합니다Formal
멍청합니다

Present

해요체Polite합니다체Formal해체Casual한다체Plain
서술Statement 멍청해요멍청합니다멍청해멍청하다

Past

해요체Polite합니다체Formal해체Casual한다체Plain
서술Statement 멍청했어요멍청했습니다멍청했어멍청했다

Future & presumptive

해요체Polite합니다체Formal해체Casual한다체Plain
-겠-Will / must be 멍청하겠어요멍청하겠습니다멍청하겠어멍청하겠다
-을 것이다Going to 멍청할 거예요멍청할 것입니다멍청할 거야멍청할 것이다

Questions

해요체Polite합니다체Formal해체Casual한다체Plain
현재Present 멍청해요?멍청합니까?멍청해?멍청하니?
과거Past 멍청했어요?멍청했습니까?멍청했어?멍청했니?

Negation

해요체Polite합니다체Formal해체Casual한다체Plain
안Not (short) 안 멍청해요안 멍청합니다안 멍청해안 멍청하다
-지 않다Not (long) 멍청하지 않아요멍청하지 않습니다멍청하지 않아멍청하지 않다

Honorific

해요체Polite합니다체Formal해체Casual한다체Plain
현재Present 멍청하세요멍청하십니다멍청하셔멍청하시다
과거Past 멍청하셨어요멍청하셨습니다멍청하셨어멍청하셨다

Modifying a noun

현재Present
멍청한
과거Past
멍청한
미래Future
멍청할
회상Used to
멍청하던

Joining 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

Sentence patterns

In real sentences

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.

Common 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.