끄다

to extinguish

Principal parts

관형사형Modifier
끄는
아/어Infinitive
꺼
-으니Since
끄니
합니다Formal
끕니다

Present

해요체Polite합니다체Formal해체Casual한다체Plain
서술Statement 꺼요끕니다꺼끈다

Past

해요체Polite합니다체Formal해체Casual한다체Plain
서술Statement 껐어요껐습니다껐어껐다

Future & presumptive

해요체Polite합니다체Formal해체Casual한다체Plain
-겠-Will / must be 끄겠어요끄겠습니다끄겠어끄겠다
-을 것이다Going to 끌 거예요끌 것입니다끌 거야끌 것이다

Questions

해요체Polite합니다체Formal해체Casual한다체Plain
현재Present 꺼요?끕니까?꺼?끄니?
과거Past 껐어요?껐습니까?껐어?껐니?

Commands

해요체Polite합니다체Formal해체Casual한다체Plain
명령Do it 끄세요끄십시오꺼꺼라
청유Let's 꺼요끕시다꺼끄자

Negation

해요체Polite합니다체Formal해체Casual한다체Plain
안Not (short) 안 꺼요안 끕니다안 꺼안 끈다
-지 않다Not (long) 끄지 않아요끄지 않습니다끄지 않아끄지 않는다
못Cannot 못 꺼요못 끕니다못 꺼못 끈다

Honorific

해요체Polite합니다체Formal해체Casual한다체Plain
현재Present 끄세요끄십니다끄셔끄신다
과거Past 끄셨어요끄셨습니다끄셨어끄셨다

Modifying a noun

현재Present
끄는
과거Past
끈
미래Future
끌
회상Used to
끄던

Joining clauses

-고and
끄고
-게-ly / so that
끄게
-어서so / and then
꺼서
-으니까since
끄니까
-으면if / when
끄면
-지만but
끄지만
-는데and / but (setting up)
끄는데
-어도even if
꺼도

In progress

해요체Polite합니다체Formal해체Casual한다체Plain
현재Is doing 끄고 있어요끄고 있습니다끄고 있어끄고 있다
과거Was doing 끄고 있었어요끄고 있었습니다끄고 있었어끄고 있었다

Sentence patterns

In real sentences

노래가 왜 그렇게 사람을 끄는거죠?

Why must it be so catchy?

불 좀 꺼도 돼?

Could I turn off the light?

잠시 꺼둡시다, 알았죠?

Right. Please toggle them off. Okay?

하더니 가서 불을 끄더군요.

And she reached over and turned the light off.

Common questions

How do you conjugate 끄다 in Korean?

끄다 (to extinguish) is 꺼요 in the polite 해요체, 끕니다 in formal 합니다체, 꺼 in casual 반말 and 끈다 in the plain written style. The past is 껐어요.

What is the past tense of 끄다?

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

Is 끄다 irregular?

Yes — it is 으 irregular (으 불규칙). The stem 으 drops before a vowel ending: 쓰다 → 써요. That is why the stem looks different in 꺼 and 끄니 but unchanged in 끕니다.

What TOPIK level is 끄다?

1급 — TOPIK 1, beginner.

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.