Adjectives · Regular (있다 type)

재미있다 conjugation

to be fun; interesting · jaemiitda · sounds like [재미읻따]

Short answer: “Fun” in Korean is 재미있다 (jaemiitda), which also means interesting. Polite present: 재미있어요 (jaemiisseoyo); past: 재미있었어요 (jaemiisseosseoyo); future: 재미있을 거예요. It is regular.

Present재미있어요[재미이써요] · jaemiisseoyo
Past재미있었어요[재미이써써요] · jaemiisseosseoyo
Future재미있을 거예요[재미이쓸 꺼예요] · jaemiisseul geoyeyo
Negative재미있지 않아요[재미읻찌 아나요] · jaemiitji anayo

Opposite: 재미없다 — to be boring

재미있다 in sentences

한국 드라마가 재미있어요.Korean dramas are fun.
재미있는 영화 추천해 주세요.Please recommend a fun movie.

All forms of 재미있다

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	재미있어요	[재미이써요]	jaemiisseoyo
formal-(스)ㅂ니다	재미있습니다	[재미읻씀니다]	jaemiitseumnida
casual-아/어	재미있어	[재미이써]	jaemiisseo
plain (written)-다	재미있다	[재미읻따]	jaemiitda
formal question-(스)ㅂ니까?	재미있습니까?	[재미읻씀니까]	jaemiitseumnikka?

Past
Form	Korean	Sounds like	Romanized
polite-았/었어요	재미있었어요	[재미이써써요]	jaemiisseosseoyo
formal-았/었습니다	재미있었습니다	[재미이썯씀니다]	jaemiisseotseumnida
casual-았/었어	재미있었어	[재미이써써]	jaemiisseosseo
plain (written)-았/었다	재미있었다	[재미이썯따]	jaemiisseotda

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

Negative
Form	Korean	Sounds like	Romanized
not (long)-지 않아요	재미있지 않아요	[재미읻찌 아나요]	jaemiitji 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	재미있으세요	[재미이쓰세요]	jaemiisseuseyo
honorific — past-(으)셨어요	재미있으셨어요	[재미이쓰셔써요]	jaemiisseusyeosseoyo
honorific — formal-(으)십니다	재미있으십니다	[재미이쓰심니다]	jaemiisseusimnida

Connecting
Form	Korean	Sounds like	Romanized
… and-고	재미있고	[재미읻꼬]	jaemiitgo
… so / and then-아/어서	재미있어서	[재미이써서]	jaemiisseoseo
if …-(으)면	재미있으면	[재미이쓰면]	jaemiisseumyeon
… but-지만	재미있지만	[재미읻찌만]	jaemiitjiman
because …-(으)니까	재미있으니까	[재미이쓰니까]	jaemiisseunikka
… and / but (background)-는데	재미있는데	[재미인는데]	jaemiinneunde
even if …-아/어도	재미있어도	[재미이써도]	jaemiisseodo
while …-(으)면서	재미있으면서	[재미이쓰면서]	jaemiisseumyeonseo

Describing a noun
These go before a noun: “the food (that) I ate”, “a cold day”.
Form	Korean	Sounds like	Romanized
(that) …-는	재미있는	[재미인는]	jaemiinneun
(that) will …-(으)ㄹ	재미있을	[재미이쓸]	jaemiisseul

Useful patterns
Form	Korean	Sounds like	Romanized
can be …-(으)ㄹ 수 있어요	재미있을 수 있어요	[재미이쓸 쑤 이써요]	jaemiisseul su isseoyo
cannot be …-(으)ㄹ 수 없어요	재미있을 수 없어요	[재미이쓸 쑤 업써요]	jaemiisseul su eopseoyo
have to be …-아/어야 해요	재미있어야 해요	[재미이써야 해요]	jaemiisseoya haeyo
it’s OK if it’s …-아/어도 돼요	재미있어도 돼요	[재미이써도 돼요]	jaemiisseodo dwaeyo
…ing (noun)-기	재미있기	[재미읻끼]	jaemiitgi

How 재미있다 changes

재미있다 is built on 있다 / 없다, so like a verb it describes with -는: 재미있는, 재미있는데. Its other endings are regular: 재미있어요, 재미있으면.

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

Questions

How do you say “fun” in Korean?

“Fun” is 재미있다 (jaemiitda), pronounced [재미읻따]. In a sentence: 한국 드라마가 재미있어요. — Korean dramas are fun.

What is the past tense of 재미있다?

재미있었어요 (jaemiisseosseoyo) is the polite past tense of 재미있다 (“to be fun”). Formal: 재미있었습니다; casual: 재미있었어.

How do you say 재미있다 politely?

Everyday polite: 재미있어요 (jaemiisseoyo). Formal: 재미있습니다. Casual, with close friends: 재미있어.

Is 재미있다 irregular?

No. 재미있다 is built on 있다 / 없다, so like a verb it describes with -는: 재미있는, 재미있는데. Its other endings are regular: 재미있어요, 재미있으면.

More 있다 / 없다 words like 재미있다

Look up another word

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