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Adjectives · 하다 word

이상하다 conjugation

to be strange; weird · isanghada · sounds like [이상하다]

Short answer: “Strange” in Korean is 이상하다 (isanghada), which also means weird. Polite present: 이상해요 (isanghaeyo); past: 이상했어요 (isanghaesseoyo); future: 이상할 거예요. It is a 하다 adjective: 하 + 아/어 always becomes 해.

이상하다 in sentences

All forms of 이상하다

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.
FormKoreanSounds likeRomanized
polite-아/어요이상해요[이상해요]isanghaeyo
formal-(스)ㅂ니다이상합니다[이상함니다]isanghamnida
casual-아/어이상해[이상해]isanghae
plain (written)-다이상하다[이상하다]isanghada
formal question-(스)ㅂ니까?이상합니까?[이상함니까]isanghamnikka?
Past
FormKoreanSounds likeRomanized
polite-았/었어요이상했어요[이상해써요]isanghaesseoyo
formal-았/었습니다이상했습니다[이상핻씀니다]isanghaetseumnida
casual-았/었어이상했어[이상해써]isanghaesseo
plain (written)-았/었다이상했다[이상핻따]isanghaetda
Future
FormKoreanSounds likeRomanized
polite — will probably be-(으)ㄹ 거예요이상할 거예요[이상할 꺼예요]isanghal geoyeyo
formal-(으)ㄹ 겁니다이상할 겁니다[이상할 껌니다]isanghal geomnida
casual-(으)ㄹ 거야이상할 거야[이상할 꺼야]isanghal geoya
Negative
FormKoreanSounds likeRomanized
not (short)안 …안 이상해요[안 이상해요]an isanghaeyo
did not안 …았/었어요안 이상했어요[안 이상해써요]an isanghaesseoyo
not (long)-지 않아요이상하지 않아요[이상하지 아나요]isanghaji anayo
Honorific
Add -(으)시- when the subject is someone you respect (a teacher, a customer, an older person) — not yourself.
FormKoreanSounds likeRomanized
honorific — present-(으)세요이상하세요[이상하세요]isanghaseyo
honorific — past-(으)셨어요이상하셨어요[이상하셔써요]isanghasyeosseoyo
honorific — formal-(으)십니다이상하십니다[이상하심니다]isanghasimnida
Connecting
FormKoreanSounds likeRomanized
… and-고이상하고[이상하고]isanghago
… so / and then-아/어서이상해서[이상해서]isanghaeseo
if …-(으)면이상하면[이상하면]isanghamyeon
… but-지만이상하지만[이상하지만]isanghajiman
because …-(으)니까이상하니까[이상하니까]isanghanikka
… and / but (background)-(으)ㄴ데이상한데[이상한데]isanghande
even if …-아/어도이상해도[이상해도]isanghaedo
while …-(으)면서이상하면서[이상하면서]isanghamyeonseo
Describing a noun
These go before a noun: “the food (that) I ate”, “a cold day”.
FormKoreanSounds likeRomanized
(that is) …-(으)ㄴ이상한[이상한]isanghan
(that) will …-(으)ㄹ이상할[이상할]isanghal
Useful patterns
FormKoreanSounds likeRomanized
can be …-(으)ㄹ 수 있어요이상할 수 있어요[이상할 쑤 이써요]isanghal su isseoyo
cannot be …-(으)ㄹ 수 없어요이상할 수 없어요[이상할 쑤 업써요]isanghal su eopseoyo
have to be …-아/어야 해요이상해야 해요[이상해야 해요]isanghaeya haeyo
it’s OK if it’s …-아/어도 돼요이상해도 돼요[이상해도 돼요]isanghaedo dwaeyo
…ly (adverb)-게이상하게[이상하게]isanghage
becomes …-아/어지다이상해져요[이상해저요]isanghaejeoyo
…ing (noun)-기이상하기[이상하기]isanghagi

How 이상하다 changes

Every 하다 word works the same way: 하 + 여 becomes 해 → 이상해요, 이상했어요. With other endings 하 stays as it is: 이상합니다, 이상하면.

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

Questions

How do you say “strange” in Korean?

“Strange” is 이상하다 (isanghada), pronounced [이상하다]. In a sentence: 맛이 좀 이상해요. — It tastes a bit strange.

What is the past tense of 이상하다?

이상했어요 (isanghaesseoyo) is the polite past tense of 이상하다 (“to be strange”). Formal: 이상했습니다; casual: 이상했어.

How do you say 이상하다 politely?

Everyday polite: 이상해요 (isanghaeyo). Formal: 이상합니다. Casual, with close friends: 이상해.

How do you say “not strange” in Korean?

안 이상해요 or 이상하지 않아요. Both mean the same; the first is more common in speech.

Is 이상하다 irregular?

No. Every 하다 word works the same way: 하 + 여 becomes 해 → 이상해요, 이상했어요. With other endings 하 stays as it is: 이상합니다, 이상하면.

More 하다 words like 이상하다

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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