잠들다

to go to sleep

Principal parts

관형사형Modifier
잠드는
아/어Infinitive
잠들어
-으니Since
잠드니
합니다Formal
잠듭니다

Present

해요체Polite합니다체Formal해체Casual한다체Plain
서술Statement 잠들어요잠듭니다잠들어잠든다

Past

해요체Polite합니다체Formal해체Casual한다체Plain
서술Statement 잠들었어요잠들었습니다잠들었어잠들었다

Future & presumptive

해요체Polite합니다체Formal해체Casual한다체Plain
-겠-Will / must be 잠들겠어요잠들겠습니다잠들겠어잠들겠다
-을 것이다Going to 잠들 거예요잠들 것입니다잠들 거야잠들 것이다

Questions

해요체Polite합니다체Formal해체Casual한다체Plain
현재Present 잠들어요?잠듭니까?잠들어?잠드니?
과거Past 잠들었어요?잠들었습니까?잠들었어?잠들었니?

Commands

해요체Polite합니다체Formal해체Casual한다체Plain
명령Do it 잠드세요잠드십시오잠들어잠들어라
청유Let's 잠들어요잠듭시다잠들어잠들자

Negation

해요체Polite합니다체Formal해체Casual한다체Plain
안Not (short) 안 잠들어요안 잠듭니다안 잠들어안 잠든다
-지 않다Not (long) 잠들지 않아요잠들지 않습니다잠들지 않아잠들지 않는다
못Cannot 못 잠들어요못 잠듭니다못 잠들어못 잠든다

Honorific

해요체Polite합니다체Formal해체Casual한다체Plain
현재Present 잠드세요잠드십니다잠드셔잠드신다
과거Past 잠드셨어요잠드셨습니다잠드셨어잠드셨다

Modifying a noun

현재Present
잠드는
과거Past
잠든
미래Future
잠들
회상Used to
잠들던

Joining clauses

-고and
잠들고
-게-ly / so that
잠들게
-어서so / and then
잠들어서
-으니까since
잠드니까
-으면if / when
잠들면
-지만but
잠들지만
-는데and / but (setting up)
잠드는데
-어도even if
잠들어도

In progress

해요체Polite합니다체Formal해체Casual한다체Plain
현재Is doing 잠들고 있어요잠들고 있습니다잠들고 있어잠들고 있다
과거Was doing 잠들고 있었어요잠들고 있었습니다잠들고 있었어잠들고 있었다

Sentence patterns

In real sentences

절대로 잠들면 안 되겠죠.

You shouldn't be, certainly.

세 아이가 그곳에 누워 잠들어 있습니다.

Three kids lying on it, asleep.

우리는 잠들고자 노력하는 한 소년을 생각하죠.

We think about a little boy trying to get to sleep.

여러분은 잠든 것처럼 보이겠지만, 사실 그렇지 않습니다.

And it might seem like you were asleep, but you weren't.

Common questions

How do you conjugate 잠들다 in Korean?

잠들다 (to go to sleep) is 잠들어요 in the polite 해요체, 잠듭니다 in formal 합니다체, 잠들어 in casual 반말 and 잠든다 in the plain written style. The past is 잠들었어요.

What is the past tense of 잠들다?

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

Is 잠들다 irregular?

Yes — it is ㄹ dropping (ㄹ 탈락). ㄹ drops before ㄴ, ㅂ and ㅅ: 살다 → 삽니다. Regular, but universal. That is why the stem looks different in 잠들어 and 잠드니 but unchanged in 잠듭니다.

What TOPIK level is 잠들다?

4급 — TOPIK 4, upper 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.