약하다

to be weak

Principal parts

관형사형Modifier
약한
아/어Infinitive
약해
-으니Since
약하니
합니다Formal
약합니다

Present

해요체Polite합니다체Formal해체Casual한다체Plain
서술Statement 약해요약합니다약해약하다

Past

해요체Polite합니다체Formal해체Casual한다체Plain
서술Statement 약했어요약했습니다약했어약했다

Future & presumptive

해요체Polite합니다체Formal해체Casual한다체Plain
-겠-Will / must be 약하겠어요약하겠습니다약하겠어약하겠다
-을 것이다Going to 약할 거예요약할 것입니다약할 거야약할 것이다

Questions

해요체Polite합니다체Formal해체Casual한다체Plain
현재Present 약해요?약합니까?약해?약하니?
과거Past 약했어요?약했습니까?약했어?약했니?

Negation

해요체Polite합니다체Formal해체Casual한다체Plain
안Not (short) 안 약해요안 약합니다안 약해안 약하다
-지 않다Not (long) 약하지 않아요약하지 않습니다약하지 않아약하지 않다

Honorific

해요체Polite합니다체Formal해체Casual한다체Plain
현재Present 약하세요약하십니다약하셔약하시다
과거Past 약하셨어요약하셨습니다약하셨어약하셨다

Modifying a noun

현재Present
약한
과거Past
약한
미래Future
약할
회상Used to
약하던

Joining clauses

-고and
약하고
-게-ly / so that
약하게
-어서so / and then
약해서
-으니까since
약하니까
-으면if / when
약하면
-지만but
약하지만
-는데and / but (setting up)
약한데
-어도even if
약해도

Sentence patterns

In real sentences

그것들이 우리를 약하게 합니다.

It makes us feel vulnerable.

약한 팀이 내가 좋아하는 팀을 이기거나

The victory of the underdog over the favored team.

약해지는 것 뿐만이 아니라, 아주 없어질 때도 있었습니다

Not only would it lift, but it might never return.

우리는 마음이 약하면 상처 받는다고 일찍 배우게 됩니다.

We learn early that those with softer hearts suffer.

Common questions

How do you conjugate 약하다 in Korean?

약하다 (to be weak) is 약해요 in the polite 해요체, 약합니다 in formal 합니다체, 약해 in casual 반말 and 약하다 in the plain written style. The past is 약했어요.

What is the past tense of 약하다?

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

Is 약하다 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 약하여 and 약하니 but unchanged in 약합니다.

What TOPIK level is 약하다?

2급 — TOPIK 2, elementary.

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.