Verbs · Regular

잊다 conjugation

to forget · itda · sounds like [읻따]

Short answer: “To forget” in Korean is 잊다 (itda). Polite present: 잊어요 (ijeoyo); past: 잊었어요 (ijeosseoyo); future: 잊을 거예요. It is regular.

Present잊어요[이저요] · ijeoyo
Past잊었어요[이저써요] · ijeosseoyo
Future잊을 거예요[이즐 꺼예요] · ijeul geoyeyo
Negative안 잊어요[안 이저요] · an ijeoyo

Opposite: 기억하다 — to remember

잊다 in sentences

비밀번호를 잊었어요.I forgot my password.
오늘을 잊지 마세요.Don’t forget today.

All forms of 잊다

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	잊어요	[이저요]	ijeoyo
formal-(스)ㅂ니다	잊습니다	[읻씀니다]	itseumnida
casual-아/어	잊어	[이저]	ijeo
plain (written)-(느)ㄴ다	잊는다	[인는다]	inneunda
formal question-(스)ㅂ니까?	잊습니까?	[읻씀니까]	itseumnikka?
is …ing (polite)-고 있어요	잊고 있어요	[읻꼬 이써요]	itgo isseoyo

Past
Form	Korean	Sounds like	Romanized
polite-았/었어요	잊었어요	[이저써요]	ijeosseoyo
formal-았/었습니다	잊었습니다	[이젇씀니다]	ijeotseumnida
casual-았/었어	잊었어	[이저써]	ijeosseo
plain (written)-았/었다	잊었다	[이젇따]	ijeotda

Future
Form	Korean	Sounds like	Romanized
polite — will-(으)ㄹ 거예요	잊을 거예요	[이즐 꺼예요]	ijeul geoyeyo
formal-(으)ㄹ 겁니다	잊을 겁니다	[이즐 껌니다]	ijeul geomnida
casual-(으)ㄹ 거야	잊을 거야	[이즐 꺼야]	ijeul geoya
formal — I will (intention)-겠습니다	잊겠습니다	[읻껟씀니다]	itgetseumnida

Negative
Form	Korean	Sounds like	Romanized
not (short)안 …	안 잊어요	[안 이저요]	an ijeoyo
did not안 …았/었어요	안 잊었어요	[안 이저써요]	an ijeosseoyo
not (long)-지 않아요	잊지 않아요	[읻찌 아나요]	itji anayo
cannot못 …	못 잊어요	[몯 이저요]	mot ijeoyo

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	잊으세요	[이즈세요]	ijeuseyo
honorific — past-(으)셨어요	잊으셨어요	[이즈셔써요]	ijeusyeosseoyo
honorific — formal-(으)십니다	잊으십니다	[이즈심니다]	ijeusimnida

Requests
Form	Korean	Sounds like	Romanized
please …-(으)세요	잊으세요	[이즈세요]	ijeuseyo
please … (for me)-아/어 주세요	잊어 주세요	[이저 주세요]	ijeo juseyo
please don’t …-지 마세요	잊지 마세요	[읻찌 마세요]	itji maseyo
let’s … (formal)-(으)ㅂ시다	잊읍시다	[이즙씨다]	ijeupsida
let’s … (casual)-자	잊자	[읻짜]	itja
do … ! (casual command)-아/어라	잊어라	[이저라]	ijeora

Connecting
Form	Korean	Sounds like	Romanized
… and-고	잊고	[읻꼬]	itgo
… so / and then-아/어서	잊어서	[이저서]	ijeoseo
if …-(으)면	잊으면	[이즈면]	ijeumyeon
… but-지만	잊지만	[읻찌만]	itjiman
because …-(으)니까	잊으니까	[이즈니까]	ijeunikka
… and / but (background)-는데	잊는데	[인는데]	inneunde
even if …-아/어도	잊어도	[이저도]	ijeodo
while …-(으)면서	잊으면서	[이즈면서]	ijeumyeonseo
in order to …-(으)려고	잊으려고	[이즈려고]	ijeuryeogo
(go) to …-(으)러	잊으러	[이즈러]	ijeureo
before …-기 전에	잊기 전에	[읻끼 저네]	itgi jeone
after …-(으)ㄴ 후에	잊은 후에	[이즌 후에]	ijeun 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	잊는	[인는]	inneun
(that) …ed-(으)ㄴ	잊은	[이즌]	ijeun
(that) will …-(으)ㄹ	잊을	[이즐]	ijeul

Useful patterns
Form	Korean	Sounds like	Romanized
I want to …-고 싶어요	잊고 싶어요	[읻꼬 시퍼요]	itgo sipeoyo
can …-(으)ㄹ 수 있어요	잊을 수 있어요	[이즐 쑤 이써요]	ijeul su isseoyo
cannot …-(으)ㄹ 수 없어요	잊을 수 없어요	[이즐 쑤 업써요]	ijeul su eopseoyo
have to …-아/어야 해요	잊어야 해요	[이저야 해요]	ijeoya haeyo
may … / it’s OK to …-아/어도 돼요	잊어도 돼요	[이저도 돼요]	ijeodo dwaeyo
must not …-(으)면 안 돼요	잊으면 안 돼요	[이즈면 안 돼요]	ijeumyeon an dwaeyo
…ing (noun)-기	잊기	[읻끼]	itgi

How 잊다 changes

잊 ends in a consonant, so 아/어 endings are added as they are → 잊어요, and endings written -(으) add 으 → 잊으면, 잊을. 잊다 is regular.

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

Questions

How do you say “forget” in Korean?

“To forget” is 잊다 (itda), pronounced [읻따]. In a sentence: 비밀번호를 잊었어요. — I forgot my password.

What is the past tense of 잊다?

잊었어요 (ijeosseoyo) is the polite past tense of 잊다 (“to forget”). Formal: 잊었습니다; casual: 잊었어.

How do you say 잊다 politely?

Everyday polite: 잊어요 (ijeoyo). Formal: 잊습니다. Casual, with close friends: 잊어.

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

잊고 싶어요 (itgo sipeoyo), pronounced [읻꼬 시퍼요].

Is 잊다 irregular?

No. 잊 ends in a consonant, so 아/어 endings are added as they are → 잊어요, and endings written -(으) add 으 → 잊으면, 잊을. 잊다 is regular.

More regular words like 잊다

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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