유효해
yoo-hyoh-hae
yuhyohae
유효하다
To say effective, valid politely in the present tense, use 유효해요 (yoo-hyoh-hae-yoh) · yuhyohaeyo. Below is the full conjugation of 유효하다 across the three tenses and three everyday speech levels.
Grammar note (하다 verb (adj)): 하다 adjectives use the same verb 하다 as a suffix to turn descriptive nouns into predicates (행복하다 = to be happy). They conjugate identically to 하다 verbs: the 하 contracts before -아/-어 suffixes to give 해. 행복해요, 행복했어요, 행복합니다. See all 하다 verbs →
Conjugation table
pron. = pronunciation guide · RR = Revised Romanization
Highlighted = where the stem changes
| Tense | Casual (반말) | Polite (요) | Formal (합니다) |
|---|---|---|---|
| Present | 유효해요 yoo-hyoh-hae-yoh yuhyohaeyo | 유효합니다 yoo-hyoh-hahm-nee-dah yuhyohamnida | |
| Past | 유효했어 yoo-hyoh-hae-ssuh yuhyohaesseo | 유효했어요 yoo-hyoh-hae-ssuh-yoh yuhyohaesseoyo | 유효했습니다 yoo-hyoh-hae-sseum-nee-dah yuhyohaesseumnida |
| Future | 유효할 거야 yoo-hyoh-hahl guh-yah yuhyohal geoya | 유효할 거예요 yoo-hyoh-hahl guh-yae-yoh yuhyohal geoyeyo | 유효할 겁니다 yoo-hyoh-hahl guhm-nee-dah yuhyohal geomnida |
Other useful forms
Honorific / Command Polite (-(으)세요)
유효하세요
yoo-hyoh-hah-sae-yoh
yuhyohaseyo
Suggestion / Let's Polite (요)
유효해요
yoo-hyoh-hae-yoh
yuhyohaeyo
Question Polite (요)
유효해요?
yoo-hyoh-hae-yoh-?
yuhyohaeyo?
Connective "and" — (고)
유효하고
yoo-hyoh-hah-goh
yuhyohago
Conditional "if" — (면)
유효하면
yoo-hyoh-hah-myuhn
yuhyohamyeon
Progressive (고 있어요)
유효하고 있어요
yoo-hyoh-hah-goh ee-ssuh-yoh
yuhyohago isseoyo
Want to (고 싶어요)
유효하고 싶어요
yoo-hyoh-hah-goh shee-puh-yoh
yuhyohago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
유효할 수 있어요
yoo-hyoh-hahl soo ee-ssuh-yoh
yuhyohal su isseoyo
Because / So (아/어서)
유효해서
yoo-hyoh-hae-suh
yuhyohaeseo
Noun form — (기)
유효하기
yoo-hyoh-hah-gee
yuhyohagi
Noun form — (음)
유효함
yoo-hyoh-hahm
yuhyoham