단언하다

to assert

Principal parts

관형사형Modifier
단언하는
아/어Infinitive
단언하
-으니Since
단언하니
합니다Formal
단언합니다

Present

해요체Polite합니다체Formal해체Casual한다체Plain
서술Statement 단언하요단언합니다단언하단언한다

Past

해요체Polite합니다체Formal해체Casual한다체Plain
서술Statement 단언핬어요단언핬습니다단언핬어단언핬다

Future & presumptive

해요체Polite합니다체Formal해체Casual한다체Plain
-겠-Will / must be 단언하겠어요단언하겠습니다단언하겠어단언하겠다
-을 것이다Going to 단언할 거예요단언할 것입니다단언할 거야단언할 것이다

Questions

해요체Polite합니다체Formal해체Casual한다체Plain
현재Present 단언하요?단언합니까?단언하?단언하니?
과거Past 단언핬어요?단언핬습니까?단언핬어?단언핬니?

Commands

해요체Polite합니다체Formal해체Casual한다체Plain
명령Do it 단언하세요단언하십시오단언하단언하라
청유Let's 단언하요단언합시다단언하단언하자

Negation

해요체Polite합니다체Formal해체Casual한다체Plain
안Not (short) 안 단언하요안 단언합니다안 단언하안 단언한다
-지 않다Not (long) 단언하지 않아요단언하지 않습니다단언하지 않아단언하지 않는다
못Cannot 못 단언하요못 단언합니다못 단언하못 단언한다

Honorific

해요체Polite합니다체Formal해체Casual한다체Plain
현재Present 단언하세요단언하십니다단언하셔단언하신다
과거Past 단언하셨어요단언하셨습니다단언하셨어단언하셨다

Modifying a noun

현재Present
단언하는
과거Past
단언한
미래Future
단언할
회상Used to
단언하던

Joining clauses

-고and
단언하고
-게-ly / so that
단언하게
-어서so / and then
단언하서
-으니까since
단언하니까
-으면if / when
단언하면
-지만but
단언하지만
-는데and / but (setting up)
단언하는데
-어도even if
단언하도

In progress

해요체Polite합니다체Formal해체Casual한다체Plain
현재Is doing 단언하고 있어요단언하고 있습니다단언하고 있어단언하고 있다
과거Was doing 단언하고 있었어요단언하고 있었습니다단언하고 있었어단언하고 있었다

Sentence patterns

In real sentences

난 톰한테 내가 안 그럴 거라고 단언했어.

I assured Tom that I wouldn't do that.

단언컨대, 그런 일은 일어나지 않을 거야.

I can assure you that's not going to happen.

결과를 단언하는 오류를 범한 것이죠.

It's the problem of the fallacy of affirming the consequent.

그 SRC가 암형성 유전자를 암으로 바꾼다고는 단언할 수 없어요.

I will not tell you that src is the most frequently turned on oncogene in all of cancer.

Common questions

How do you conjugate 단언하다 in Korean?

단언하다 (to assert) is 단언하요 in the polite 해요체, 단언합니다 in formal 합니다체, 단언하 in casual 반말 and 단언한다 in the plain written style. The past is 단언핬어요.

What is the past tense of 단언하다?

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

Is 단언하다 a regular verb?

Yes. Its stem never changes shape: 단언합니다, 단언하, 단언하니 all keep 단언하 intact. Only the ending moves.

What TOPIK level is 단언하다?

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.