허약하다 Korean adjective conjugation
weak
Every form of 허약하다 across the four speech levels. It is 여 irregular — 하다 and every verb built on it: 하다 → 하여 → 해요.
기본형Principal parts
The four forms the dictionary prints. Every other form on this page is derived from them.
- 관형사형Modifier
- 허약한
- 아/어Infinitive
- 허약해
- -으니Since
- 허약하니
- 합니다Formal
- 허약합니다
현재Present
The tense that does the most work. 해요체 is the one to learn first — it is polite without being formal, and it is what most conversation is in.
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 서술Statement | 허약해요 | 허약합니다 | 허약해 | 허약하다 |
과거Past
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 서술Statement | 허약했어요 | 허약했습니다 | 허약했어 | 허약했다 |
미래·추측Future & presumptive
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| -겠-Will / must be | 허약하겠어요 | 허약하겠습니다 | 허약하겠어 | 허약하겠다 |
| -을 것이다Going to | 허약할 거예요 | 허약할 것입니다 | 허약할 거야 | 허약할 것이다 |
의문Questions
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 현재Present | 허약해요? | 허약합니까? | 허약해? | 허약하니? |
| 과거Past | 허약했어요? | 허약했습니까? | 허약했어? | 허약했니? |
부정Negation
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 안Not (short) | 안 허약해요 | 안 허약합니다 | 안 허약해 | 안 허약하다 |
| -지 않다Not (long) | 허약하지 않아요 | 허약하지 않습니다 | 허약하지 않아 | 허약하지 않다 |
높임Honorific
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 현재Present | 허약하세요 | 허약하십니다 | 허약하셔 | 허약하시다 |
| 과거Past | 허약하셨어요 | 허약하셨습니다 | 허약하셨어 | 허약하셨다 |
관형사형Modifying a noun
- 현재Present
- 허약한
- 과거Past
- 허약한
- 미래Future
- 허약할
- 회상Used to
- 허약하던
연결Joining clauses
- -고and
- 허약하고
- -게-ly / so that
- 허약하게
- -어서so / and then
- 허약해서
- -으니까since
- 허약하니까
- -으면if / when
- 허약하면
- -지만but
- 허약하지만
- -는데and / but (setting up)
- 허약한데
- -어도even if
- 허약해도
문형Sentence patterns
How the dictionary says this verb is used. The numbers are slots: 1 is the subject, 2 the object.
- 1이 허약하다
예문In real sentences
From the dictionary, each with its translation.
어린이 결혼은 빈곤, 허약한 건강, 교육 부족의 악순환을 연장시킵니다.
Child marriages prolong the vicious cycle of poverty, poor health, lack of education.
인간은 너무 허약해
Human beings are so fragile.
아이가 정말 허약해요
The child is very Weak.
허약한 자에게는 독이다
Are the poison of the weak.
자주 묻는 질문Common questions
How do you conjugate 허약하다 in Korean?
허약하다 (weak) is 허약해요 in the polite 해요체, 허약합니다 in formal 합니다체, 허약해 in casual 반말 and 허약하다 in the plain written style. The past is 허약했어요.
What is the past tense of 허약하다?
허약했어요 in everyday polite speech, 허약했습니다 formally. It is built from the 아/어 form 허약하여 plus ㅆ, which is why an irregular stem shows its irregularity here.
Is 허약하다 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 허약하여 and 허약하니 but unchanged in 허약합니다.
What TOPIK level is 허약하다?
It carries no TOPIK grade. That is a fact about the published word lists rather than about the word — it conjugates by exactly the same rules as everything else.
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.