심각하다

to be serious

Principal parts

관형사형Modifier
심각한
아/어Infinitive
심각해
-으니Since
심각하니
합니다Formal
심각합니다

Present

해요체Polite합니다체Formal해체Casual한다체Plain
서술Statement 심각해요심각합니다심각해심각하다

Past

해요체Polite합니다체Formal해체Casual한다체Plain
서술Statement 심각했어요심각했습니다심각했어심각했다

Future & presumptive

해요체Polite합니다체Formal해체Casual한다체Plain
-겠-Will / must be 심각하겠어요심각하겠습니다심각하겠어심각하겠다
-을 것이다Going to 심각할 거예요심각할 것입니다심각할 거야심각할 것이다

Questions

해요체Polite합니다체Formal해체Casual한다체Plain
현재Present 심각해요?심각합니까?심각해?심각하니?
과거Past 심각했어요?심각했습니까?심각했어?심각했니?

Negation

해요체Polite합니다체Formal해체Casual한다체Plain
안Not (short) 안 심각해요안 심각합니다안 심각해안 심각하다
-지 않다Not (long) 심각하지 않아요심각하지 않습니다심각하지 않아심각하지 않다

Honorific

해요체Polite합니다체Formal해체Casual한다체Plain
현재Present 심각하세요심각하십니다심각하셔심각하시다
과거Past 심각하셨어요심각하셨습니다심각하셨어심각하셨다

Modifying a noun

현재Present
심각한
과거Past
심각한
미래Future
심각할
회상Used to
심각하던

Joining clauses

-고and
심각하고
-게-ly / so that
심각하게
-어서so / and then
심각해서
-으니까since
심각하니까
-으면if / when
심각하면
-지만but
심각하지만
-는데and / but (setting up)
심각한데
-어도even if
심각해도

Sentence patterns

In real sentences

더 심각한 문제가 무엇인지 아시나요?

You want to know what's even more alarming?

현실이자 심각한 문제입니다. 어떻게든 해야만 합니다.

And it's here and it's bad and it's serious, and we need to do something about it.

우리에게 심각한 문제가 있어요

We have a serious fucking problem.

이건 심각한 문제에요.

This is serious.

Common questions

How do you conjugate 심각하다 in Korean?

심각하다 (to be serious) is 심각해요 in the polite 해요체, 심각합니다 in formal 합니다체, 심각해 in casual 반말 and 심각하다 in the plain written style. The past is 심각했어요.

What is the past tense of 심각하다?

심각했어요 in everyday polite speech, 심각했습니다 formally. It is built from the 아/어 form 심각하여 plus ㅆ, which is why an irregular stem shows its irregularity here.

Is 심각하다 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 심각하여 and 심각하니 but unchanged in 심각합니다.

What TOPIK level is 심각하다?

3급 — TOPIK 3, lower intermediate.

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.