Verbs · Regular

잊어버리다 conjugation

to forget (completely) · ijeobeorida · sounds like [이저버리다]

Short answer: “To forget (completely)” in Korean is 잊어버리다 (ijeobeorida). Polite present: 잊어버려요 (ijeobeoryeoyo); past: 잊어버렸어요 (ijeobeoryeosseoyo); future: 잊어버릴 거예요. It is regular.

Present잊어버려요[이저버려요] · ijeobeoryeoyo
Past잊어버렸어요[이저버려써요] · ijeobeoryeosseoyo
Future잊어버릴 거예요[이저버릴 꺼예요] · ijeobeoril geoyeyo
Negative안 잊어버려요[안 이저버려요] · an ijeobeoryeoyo

잊어버리다 in sentences

우산 가져오는 것을 잊어버렸어요.I forgot to bring my umbrella.
걱정은 다 잊어버리세요.Forget all your worries.

All forms of 잊어버리다

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	잊어버려요	[이저버려요]	ijeobeoryeoyo
formal-(스)ㅂ니다	잊어버립니다	[이저버림니다]	ijeobeorimnida
casual-아/어	잊어버려	[이저버려]	ijeobeoryeo
plain (written)-(느)ㄴ다	잊어버린다	[이저버린다]	ijeobeorinda
formal question-(스)ㅂ니까?	잊어버립니까?	[이저버림니까]	ijeobeorimnikka?
is …ing (polite)-고 있어요	잊어버리고 있어요	[이저버리고 이써요]	ijeobeorigo isseoyo

Past
Form	Korean	Sounds like	Romanized
polite-았/었어요	잊어버렸어요	[이저버려써요]	ijeobeoryeosseoyo
formal-았/었습니다	잊어버렸습니다	[이저버렫씀니다]	ijeobeoryeotseumnida
casual-았/었어	잊어버렸어	[이저버려써]	ijeobeoryeosseo
plain (written)-았/었다	잊어버렸다	[이저버렫따]	ijeobeoryeotda

Future
Form	Korean	Sounds like	Romanized
polite — will-(으)ㄹ 거예요	잊어버릴 거예요	[이저버릴 꺼예요]	ijeobeoril geoyeyo
formal-(으)ㄹ 겁니다	잊어버릴 겁니다	[이저버릴 껌니다]	ijeobeoril geomnida
casual-(으)ㄹ 거야	잊어버릴 거야	[이저버릴 꺼야]	ijeobeoril geoya
formal — I will (intention)-겠습니다	잊어버리겠습니다	[이저버리겓씀니다]	ijeobeorigetseumnida

Negative
Form	Korean	Sounds like	Romanized
not (short)안 …	안 잊어버려요	[안 이저버려요]	an ijeobeoryeoyo
did not안 …았/었어요	안 잊어버렸어요	[안 이저버려써요]	an ijeobeoryeosseoyo
not (long)-지 않아요	잊어버리지 않아요	[이저버리지 아나요]	ijeobeoriji anayo
cannot못 …	못 잊어버려요	[몯 이저버려요]	mot ijeobeoryeoyo

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	잊어버리세요	[이저버리세요]	ijeobeoriseyo
honorific — past-(으)셨어요	잊어버리셨어요	[이저버리셔써요]	ijeobeorisyeosseoyo
honorific — formal-(으)십니다	잊어버리십니다	[이저버리심니다]	ijeobeorisimnida

Requests
Form	Korean	Sounds like	Romanized
please …-(으)세요	잊어버리세요	[이저버리세요]	ijeobeoriseyo
please … (for me)-아/어 주세요	잊어버려 주세요	[이저버려 주세요]	ijeobeoryeo juseyo
please don’t …-지 마세요	잊어버리지 마세요	[이저버리지 마세요]	ijeobeoriji maseyo
let’s … (formal)-(으)ㅂ시다	잊어버립시다	[이저버립씨다]	ijeobeoripsida
let’s … (casual)-자	잊어버리자	[이저버리자]	ijeobeorija
do … ! (casual command)-아/어라	잊어버려라	[이저버려라]	ijeobeoryeora

Connecting
Form	Korean	Sounds like	Romanized
… and-고	잊어버리고	[이저버리고]	ijeobeorigo
… so / and then-아/어서	잊어버려서	[이저버려서]	ijeobeoryeoseo
if …-(으)면	잊어버리면	[이저버리면]	ijeobeorimyeon
… but-지만	잊어버리지만	[이저버리지만]	ijeobeorijiman
because …-(으)니까	잊어버리니까	[이저버리니까]	ijeobeorinikka
… and / but (background)-는데	잊어버리는데	[이저버리는데]	ijeobeorineunde
even if …-아/어도	잊어버려도	[이저버려도]	ijeobeoryeodo
while …-(으)면서	잊어버리면서	[이저버리면서]	ijeobeorimyeonseo
in order to …-(으)려고	잊어버리려고	[이저버리려고]	ijeobeoriryeogo
(go) to …-(으)러	잊어버리러	[이저버리러]	ijeobeorireo
before …-기 전에	잊어버리기 전에	[이저버리기 저네]	ijeobeorigi jeone
after …-(으)ㄴ 후에	잊어버린 후에	[이저버린 후에]	ijeobeorin hue

Describing a noun
These go before a noun: “the food (that) I ate”, “a cold day”.
Form	Korean	Sounds like	Romanized
(that) … now-는	잊어버리는	[이저버리는]	ijeobeorineun
(that) …ed-(으)ㄴ	잊어버린	[이저버린]	ijeobeorin
(that) will …-(으)ㄹ	잊어버릴	[이저버릴]	ijeobeoril

Useful patterns
Form	Korean	Sounds like	Romanized
I want to …-고 싶어요	잊어버리고 싶어요	[이저버리고 시퍼요]	ijeobeorigo sipeoyo
can …-(으)ㄹ 수 있어요	잊어버릴 수 있어요	[이저버릴 쑤 이써요]	ijeobeoril su isseoyo
cannot …-(으)ㄹ 수 없어요	잊어버릴 수 없어요	[이저버릴 쑤 업써요]	ijeobeoril su eopseoyo
have to …-아/어야 해요	잊어버려야 해요	[이저버려야 해요]	ijeobeoryeoya haeyo
may … / it’s OK to …-아/어도 돼요	잊어버려도 돼요	[이저버려도 돼요]	ijeobeoryeodo dwaeyo
must not …-(으)면 안 돼요	잊어버리면 안 돼요	[이저버리면 안 돼요]	ijeobeorimyeon an dwaeyo
…ing (noun)-기	잊어버리기	[이저버리기]	ijeobeorigi

How 잊어버리다 changes

잊어버리 ends in a vowel, so 잊어버리 + 아/어 becomes 잊어버려 → 잊어버려요, 잊어버렸어요. Endings written -(으) attach directly → 잊어버리면, 잊어버릴. 잊어버리다 is regular.

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

Questions

How do you say “forget” in Korean?

“To forget (completely)” is 잊어버리다 (ijeobeorida), pronounced [이저버리다]. In a sentence: 우산 가져오는 것을 잊어버렸어요. — I forgot to bring my umbrella.

What is the past tense of 잊어버리다?

잊어버렸어요 (ijeobeoryeosseoyo) is the polite past tense of 잊어버리다 (“to forget (completely)”). Formal: 잊어버렸습니다; casual: 잊어버렸어.

How do you say 잊어버리다 politely?

Everyday polite: 잊어버려요 (ijeobeoryeoyo). Formal: 잊어버립니다. Casual, with close friends: 잊어버려.

How do you say “I want to forget” in Korean?

잊어버리고 싶어요 (ijeobeorigo sipeoyo), pronounced [이저버리고 시퍼요].

Is 잊어버리다 irregular?

No. 잊어버리 ends in a vowel, so 잊어버리 + 아/어 becomes 잊어버려 → 잊어버려요, 잊어버렸어요. Endings written -(으) attach directly → 잊어버리면, 잊어버릴. 잊어버리다 is regular.

More regular words like 잊어버리다

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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