견고하다 Korean adjective conjugation
to be firm
Every form of 견고하다 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
- 견고한
- 아/어Infinitive
- 견고해
- -으니Since
- 견고하니
- 합니다Formal
- 견고합니다
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 | 견고해요 | 견고합니다 | 견고해 | 견고하다 |
과거Past
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 서술Statement | 견고했어요 | 견고했습니다 | 견고했어 | 견고했다 |
미래·추측Future & presumptive
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| -겠-Will / must be | 견고하겠어요 | 견고하겠습니다 | 견고하겠어 | 견고하겠다 |
| -을 것이다Going to | 견고할 거예요 | 견고할 것입니다 | 견고할 거야 | 견고할 것이다 |
의문Questions
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 현재Present | 견고해요? | 견고합니까? | 견고해? | 견고하니? |
| 과거Past | 견고했어요? | 견고했습니까? | 견고했어? | 견고했니? |
부정Negation
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 안Not (short) | 안 견고해요 | 안 견고합니다 | 안 견고해 | 안 견고하다 |
| -지 않다Not (long) | 견고하지 않아요 | 견고하지 않습니다 | 견고하지 않아 | 견고하지 않다 |
높임Honorific
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 현재Present | 견고하세요 | 견고하십니다 | 견고하셔 | 견고하시다 |
| 과거Past | 견고하셨어요 | 견고하셨습니다 | 견고하셨어 | 견고하셨다 |
관형사형Modifying a noun
- 현재Present
- 견고한
- 과거Past
- 견고한
- 미래Future
- 견고할
- 회상Used to
- 견고하던
연결Joining clauses
- -고and
- 견고하고
- -게-ly / so that
- 견고하게
- -어서so / and then
- 견고해서
- -으니까since
- 견고하니까
- -으면if / when
- 견고하면
- -지만but
- 견고하지만
- -는데and / but (setting up)
- 견고한데
- -어도even if
- 견고해도
문형Sentence patterns
How the dictionary says this verb is used. The numbers are slots: 1 is the subject, 2 the object.
- 1이 견고하다
예문In real sentences
From the dictionary, each with its translation.
하지만 모든게 견고하게 보이죠.
But everything seems kid of solid.
상당히 견고하고 효과적인 협력의 장을 경험합니다.
What we get is extremely sophisticated and effective networks of cooperation.
그 때에 뉴욕은 이미 견고한 세계 음식의 수도였는데
At the time, New York was already well-established as a food capital of the world.
한 사람의 정신의 견고함이 위기를 통해 드러나기 때문입니다.
Because that risk reveals the strength of one's heart.
자주 묻는 질문Common questions
How do you conjugate 견고하다 in Korean?
견고하다 (to be firm) is 견고해요 in the polite 해요체, 견고합니다 in formal 합니다체, 견고해 in casual 반말 and 견고하다 in the plain written style. The past is 견고했어요.
What is the past tense of 견고하다?
견고했어요 in everyday polite speech, 견고했습니다 formally. It is built from the 아/어 form 견고하여 plus ㅆ, which is why an irregular stem shows its irregularity here.
Is 견고하다 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 견고하여 and 견고하니 but unchanged in 견고합니다.
What TOPIK level is 견고하다?
6급 — TOPIK 6, mastery.
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.