두텁다

to be deep (of relationships)

Principal parts

관형사형Modifier
두터운
아/어Infinitive
두터워
-으니Since
두터우니
합니다Formal
두텁습니다

Present

해요체Polite합니다체Formal해체Casual한다체Plain
서술Statement 두터워요두텁습니다두터워두텁다

Past

해요체Polite합니다체Formal해체Casual한다체Plain
서술Statement 두터웠어요두터웠습니다두터웠어두터웠다

Future & presumptive

해요체Polite합니다체Formal해체Casual한다체Plain
-겠-Will / must be 두텁겠어요두텁겠습니다두텁겠어두텁겠다
-을 것이다Going to 두터울 거예요두터울 것입니다두터울 거야두터울 것이다

Questions

해요체Polite합니다체Formal해체Casual한다체Plain
현재Present 두터워요?두텁습니까?두터워?두터우니?
과거Past 두터웠어요?두터웠습니까?두터웠어?두터웠니?

Negation

해요체Polite합니다체Formal해체Casual한다체Plain
안Not (short) 안 두터워요안 두텁습니다안 두터워안 두텁다
-지 않다Not (long) 두텁지 않아요두텁지 않습니다두텁지 않아두텁지 않다

Honorific

해요체Polite합니다체Formal해체Casual한다체Plain
현재Present 두터우세요두터우십니다두터우셔두터우시다
과거Past 두터우셨어요두터우셨습니다두터우셨어두터우셨다

Modifying a noun

현재Present
두터운
과거Past
두터운
미래Future
두터울
회상Used to
두텁던

Joining clauses

-고and
두텁고
-게-ly / so that
두텁게
-어서so / and then
두터워서
-으니까since
두터우니까
-으면if / when
두터우면
-지만but
두텁지만
-는데and / but (setting up)
두터운데
-어도even if
두터워도

Sentence patterns

In real sentences

요수아 캉곰베씨 같은 촌장님과 마을주민에게 두터운 신임을 얻었지요.

They were trusted by the local communities like our leader, Joshua Kangombe.

타이탄은 사실 정말 두터운 대기층을 갖고 있습니다.

It actually has a very thick atmosphere.

또한 두터운 이산화탄소 대기에 의해 뜨거운 상태가 유지가 됩니다.

And it was kept hot by a thick carbon dioxide atmosphere.

이 드라이아이스를 가열하면, 지구에서 그러하듯 절묘하게 대기층을 두텁게 만듭니다.

If we heat it up, it sublimes directly into the atmosphere and thickens the atmosphere the same way it does on Earth.

Common questions

How do you conjugate 두텁다 in Korean?

두텁다 (to be deep (of relationships)) is 두터워요 in the polite 해요체, 두텁습니다 in formal 합니다체, 두터워 in casual 반말 and 두텁다 in the plain written style. The past is 두터웠어요.

What is the past tense of 두텁다?

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

Is 두텁다 irregular?

Yes — it is ㅂ irregular (ㅂ 불규칙). ㅂ becomes 우 before a vowel: 춥다 → 추워요. That is why the stem looks different in 두터워 and 두터우니 but unchanged in 두텁습니다.

What TOPIK level is 두텁다?

5급 — TOPIK 5, advanced.

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.