Adjectives · 하다 word

심심하다 conjugation

to be bored · simsimhada · sounds like [심심하다]

Short answer: “Bored” in Korean is 심심하다 (simsimhada). Polite present: 심심해요 (simsimhaeyo); past: 심심했어요 (simsimhaesseoyo); future: 심심할 거예요. It is a 하다 adjective: 하 + 아/어 always becomes 해.

Present심심해요[심심해요] · simsimhaeyo
Past심심했어요[심심해써요] · simsimhaesseoyo
Future심심할 거예요[심심할 꺼예요] · simsimhal geoyeyo
Negative안 심심해요[안 심심해요] · an simsimhaeyo

심심하다 in sentences

주말에 심심했어요.I was bored at the weekend.
심심하면 같이 영화 봐요.If you’re bored, let’s watch a movie together.

All forms of 심심하다

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	심심해요	[심심해요]	simsimhaeyo
formal-(스)ㅂ니다	심심합니다	[심심함니다]	simsimhamnida
casual-아/어	심심해	[심심해]	simsimhae
plain (written)-다	심심하다	[심심하다]	simsimhada
formal question-(스)ㅂ니까?	심심합니까?	[심심함니까]	simsimhamnikka?

Past
Form	Korean	Sounds like	Romanized
polite-았/었어요	심심했어요	[심심해써요]	simsimhaesseoyo
formal-았/었습니다	심심했습니다	[심심핻씀니다]	simsimhaetseumnida
casual-았/었어	심심했어	[심심해써]	simsimhaesseo
plain (written)-았/었다	심심했다	[심심핻따]	simsimhaetda

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

Negative
Form	Korean	Sounds like	Romanized
not (short)안 …	안 심심해요	[안 심심해요]	an simsimhaeyo
did not안 …았/었어요	안 심심했어요	[안 심심해써요]	an simsimhaesseoyo
not (long)-지 않아요	심심하지 않아요	[심심하지 아나요]	simsimhaji 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	심심하세요	[심심하세요]	simsimhaseyo
honorific — past-(으)셨어요	심심하셨어요	[심심하셔써요]	simsimhasyeosseoyo
honorific — formal-(으)십니다	심심하십니다	[심심하심니다]	simsimhasimnida

Connecting
Form	Korean	Sounds like	Romanized
… and-고	심심하고	[심심하고]	simsimhago
… so / and then-아/어서	심심해서	[심심해서]	simsimhaeseo
if …-(으)면	심심하면	[심심하면]	simsimhamyeon
… but-지만	심심하지만	[심심하지만]	simsimhajiman
because …-(으)니까	심심하니까	[심심하니까]	simsimhanikka
… and / but (background)-(으)ㄴ데	심심한데	[심심한데]	simsimhande
even if …-아/어도	심심해도	[심심해도]	simsimhaedo
while …-(으)면서	심심하면서	[심심하면서]	simsimhamyeonseo

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	심심한	[심심한]	simsimhan
(that) will …-(으)ㄹ	심심할	[심심할]	simsimhal

Useful patterns
Form	Korean	Sounds like	Romanized
can be …-(으)ㄹ 수 있어요	심심할 수 있어요	[심심할 쑤 이써요]	simsimhal su isseoyo
cannot be …-(으)ㄹ 수 없어요	심심할 수 없어요	[심심할 쑤 업써요]	simsimhal su eopseoyo
have to be …-아/어야 해요	심심해야 해요	[심심해야 해요]	simsimhaeya haeyo
it’s OK if it’s …-아/어도 돼요	심심해도 돼요	[심심해도 돼요]	simsimhaedo dwaeyo
…ly (adverb)-게	심심하게	[심심하게]	simsimhage
becomes …-아/어지다	심심해져요	[심심해저요]	simsimhaejeoyo
…ing (noun)-기	심심하기	[심심하기]	simsimhagi

How 심심하다 changes

Every 하다 word works the same way: 하 + 여 becomes 해 → 심심해요, 심심했어요. With other endings 하 stays as it is: 심심합니다, 심심하면.

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

Questions

How do you say “bored” in Korean?

“Bored” is 심심하다 (simsimhada), pronounced [심심하다]. In a sentence: 주말에 심심했어요. — I was bored at the weekend.

What is the past tense of 심심하다?

심심했어요 (simsimhaesseoyo) is the polite past tense of 심심하다 (“to be bored”). Formal: 심심했습니다; casual: 심심했어.

How do you say 심심하다 politely?

Everyday polite: 심심해요 (simsimhaeyo). Formal: 심심합니다. Casual, with close friends: 심심해.

How do you say “not bored” in Korean?

안 심심해요 or 심심하지 않아요. Both mean the same; the first is more common in speech.

Is 심심하다 irregular?

No. Every 하다 word works the same way: 하 + 여 becomes 해 → 심심해요, 심심했어요. With other endings 하 stays as it is: 심심합니다, 심심하면.

More 하다 words like 심심하다

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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