덥다
to be hot (weather)
Principal parts
- 관형사형Modifier
- 더운
- 아/어Infinitive
- 더워
- -으니Since
- 더우니
- 합니다Formal
- 덥습니다
Present
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 서술Statement | 더워요 | 덥습니다 | 더워 | 덥다 |
Past
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 서술Statement | 더웠어요 | 더웠습니다 | 더웠어 | 더웠다 |
Future & presumptive
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| -겠-Will / must be | 덥겠어요 | 덥겠습니다 | 덥겠어 | 덥겠다 |
| -을 것이다Going to | 더울 거예요 | 더울 것입니다 | 더울 거야 | 더울 것이다 |
Questions
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 현재Present | 더워요? | 덥습니까? | 더워? | 더우니? |
| 과거Past | 더웠어요? | 더웠습니까? | 더웠어? | 더웠니? |
Negation
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 안Not (short) | 안 더워요 | 안 덥습니다 | 안 더워 | 안 덥다 |
| -지 않다Not (long) | 덥지 않아요 | 덥지 않습니다 | 덥지 않아 | 덥지 않다 |
Honorific
| 해요체Polite | 합니다체Formal | 해체Casual | 한다체Plain | |
|---|---|---|---|---|
| 현재Present | 더우세요 | 더우십니다 | 더우셔 | 더우시다 |
| 과거Past | 더우셨어요 | 더우셨습니다 | 더우셨어 | 더우셨다 |
Modifying a noun
- 현재Present
- 더운
- 과거Past
- 더운
- 미래Future
- 더울
- 회상Used to
- 덥던
Joining clauses
- -고and
- 덥고
- -게-ly / so that
- 덥게
- -어서so / and then
- 더워서
- -으니까since
- 더우니까
- -으면if / when
- 더우면
- -지만but
- 덥지만
- -는데and / but (setting up)
- 더운데
- -어도even if
- 더워도
Sentence patterns
- 1이 덥다
In real sentences
날씨가 덥지 않아요?
Isn't the weather hot?
여름이 이미 왔듯이 더워졌어요
It's gotten hotter as if summer has already come.
여기 정말 더워졌다.
It's really hot in here.
오늘은 날씨가 매우 덥다.
It is very hot today.
Common questions
How do you conjugate 덥다 in Korean?
덥다 (to be hot (weather)) is 더워요 in the polite 해요체, 덥습니다 in formal 합니다체, 더워 in casual 반말 and 덥다 in the plain written style. The past is 더웠어요.
What is the past tense of 덥다?
더웠어요 in everyday polite speech, 더웠습니다 formally. It is built from the 아/어 form 더워 plus ㅆ, which is why an irregular stem shows its irregularity here.
Is 덥다 irregular?
Yes — it is ㅂ irregular (ㅂ 불규칙). ㅂ becomes 우 before a vowel: 춥다 → 추워요. That is why the stem looks different in 더워 and 더우니 but unchanged in 덥습니다.
What TOPIK level is 덥다?
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.