Adjectives · ㅂ irregular

시끄럽다 conjugation

to be noisy; loud · sikkeureopda · sounds like [시끄럽따]

Short answer: “Noisy” in Korean is 시끄럽다 (sikkeureopda), which also means loud. Polite present: 시끄러워요 (sikkeureowoyo); past: 시끄러웠어요 (sikkeureowosseoyo); future: 시끄러울 거예요. It is a ㅂ irregular adjective.

Present시끄러워요[시끄러워요] · sikkeureowoyo
Past시끄러웠어요[시끄러워써요] · sikkeureowosseoyo
Future시끄러울 거예요[시끄러울 꺼예요] · sikkeureoul geoyeyo
Negative안 시끄러워요[안 시끄러워요] · an sikkeureowoyo

Opposite: 조용하다 — to be quiet

시끄럽다 in sentences

밖이 너무 시끄러워요.It’s too noisy outside.
시끄러워서 잠을 못 잤어요.It was so noisy that I couldn’t sleep.

All forms of 시끄럽다

Present
Polite (해요) is the everyday safe choice; formal (합니다) is for news, announcements and work; casual (반말) is for close friends and younger people.
Form	Korean	Sounds like	Romanized
polite-아/어요	시끄러워요	[시끄러워요]	sikkeureowoyo
formal-(스)ㅂ니다	시끄럽습니다	[시끄럽씀니다]	sikkeureopseumnida
casual-아/어	시끄러워	[시끄러워]	sikkeureowo
plain (written)-다	시끄럽다	[시끄럽따]	sikkeureopda
formal question-(스)ㅂ니까?	시끄럽습니까?	[시끄럽씀니까]	sikkeureopseumnikka?

Past
Form	Korean	Sounds like	Romanized
polite-았/었어요	시끄러웠어요	[시끄러워써요]	sikkeureowosseoyo
formal-았/었습니다	시끄러웠습니다	[시끄러웓씀니다]	sikkeureowotseumnida
casual-았/었어	시끄러웠어	[시끄러워써]	sikkeureowosseo
plain (written)-았/었다	시끄러웠다	[시끄러웓따]	sikkeureowotda

Future
Form	Korean	Sounds like	Romanized
polite — will probably be-(으)ㄹ 거예요	시끄러울 거예요	[시끄러울 꺼예요]	sikkeureoul geoyeyo
formal-(으)ㄹ 겁니다	시끄러울 겁니다	[시끄러울 껌니다]	sikkeureoul geomnida
casual-(으)ㄹ 거야	시끄러울 거야	[시끄러울 꺼야]	sikkeureoul geoya

Negative
Form	Korean	Sounds like	Romanized
not (short)안 …	안 시끄러워요	[안 시끄러워요]	an sikkeureowoyo
did not안 …았/었어요	안 시끄러웠어요	[안 시끄러워써요]	an sikkeureowosseoyo
not (long)-지 않아요	시끄럽지 않아요	[시끄럽찌 아나요]	sikkeureopji anayo

Honorific
Add -(으)시- when the subject is someone you respect (a teacher, a customer, an older person) — not yourself.
Form	Korean	Sounds like	Romanized
honorific — present-(으)세요	시끄러우세요	[시끄러우세요]	sikkeureouseyo
honorific — past-(으)셨어요	시끄러우셨어요	[시끄러우셔써요]	sikkeureousyeosseoyo
honorific — formal-(으)십니다	시끄러우십니다	[시끄러우심니다]	sikkeureousimnida

Connecting
Form	Korean	Sounds like	Romanized
… and-고	시끄럽고	[시끄럽꼬]	sikkeureopgo
… so / and then-아/어서	시끄러워서	[시끄러워서]	sikkeureowoseo
if …-(으)면	시끄러우면	[시끄러우면]	sikkeureoumyeon
… but-지만	시끄럽지만	[시끄럽찌만]	sikkeureopjiman
because …-(으)니까	시끄러우니까	[시끄러우니까]	sikkeureounikka
… and / but (background)-(으)ㄴ데	시끄러운데	[시끄러운데]	sikkeureounde
even if …-아/어도	시끄러워도	[시끄러워도]	sikkeureowodo
while …-(으)면서	시끄러우면서	[시끄러우면서]	sikkeureoumyeonseo

Describing a noun
These go before a noun: “the food (that) I ate”, “a cold day”.
Form	Korean	Sounds like	Romanized
(that is) …-(으)ㄴ	시끄러운	[시끄러운]	sikkeureoun
(that) will …-(으)ㄹ	시끄러울	[시끄러울]	sikkeureoul

Useful patterns
Form	Korean	Sounds like	Romanized
can be …-(으)ㄹ 수 있어요	시끄러울 수 있어요	[시끄러울 쑤 이써요]	sikkeureoul su isseoyo
cannot be …-(으)ㄹ 수 없어요	시끄러울 수 없어요	[시끄러울 쑤 업써요]	sikkeureoul su eopseoyo
have to be …-아/어야 해요	시끄러워야 해요	[시끄러워야 해요]	sikkeureowoya haeyo
it’s OK if it’s …-아/어도 돼요	시끄러워도 돼요	[시끄러워도 돼요]	sikkeureowodo dwaeyo
…ly (adverb)-게	시끄럽게	[시끄럽께]	sikkeureopge
becomes …-아/어지다	시끄러워져요	[시끄러워저요]	sikkeureowojeoyo
…ing (noun)-기	시끄럽기	[시끄럽끼]	sikkeureopgi

How 시끄럽다 changes

ㅂ irregular: before a vowel, ㅂ turns into 우 — so 시끄럽 + 어 → 시끄러워요, and -(으) endings use 우: 시끄러우면, 시끄러울. Before a consonant the ㅂ stays: 시끄럽습니다, 시끄럽고. Not every ㅂ word does this — 입다 → 입어요 and 잡다 → 잡아요 are regular.

How every verb type works → · Why it sounds like that →

Questions

How do you say “noisy” in Korean?

“Noisy” is 시끄럽다 (sikkeureopda), pronounced [시끄럽따]. In a sentence: 밖이 너무 시끄러워요. — It’s too noisy outside.

What is the past tense of 시끄럽다?

시끄러웠어요 (sikkeureowosseoyo) is the polite past tense of 시끄럽다 (“to be noisy”). Formal: 시끄러웠습니다; casual: 시끄러웠어.

How do you say 시끄럽다 politely?

Everyday polite: 시끄러워요 (sikkeureowoyo). Formal: 시끄럽습니다. Casual, with close friends: 시끄러워.

How do you say “not noisy” in Korean?

안 시끄러워요 or 시끄럽지 않아요. Both mean the same; the first is more common in speech.

Is 시끄럽다 irregular?

Yes — ㅂ irregular: before a vowel, ㅂ turns into 우 — so 시끄럽 + 어 → 시끄러워요, and -(으) endings use 우: 시끄러우면, 시끄러울. Before a consonant the ㅂ stays: 시끄럽습니다, 시끄럽고. Not every ㅂ word does this — 입다 → 입어요 and 잡다 → 잡아요 are regular.

More ㅂ irregular words like 시끄럽다

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Forms follow 한글 맞춤법 (Korean spelling rules); pronunciation follows 표준 발음법 and romanization follows 국어의 로마자 표기법 (Revised Romanization). Last updated October 16, 2026. How we check