유해해
yoo-hae-hae
yuhaehae
유해하다
To say to be harmful, noxious, injurious politely in the present tense, use 유해해요 (yoo-hae-hae-yoh) · yuhaehaeyo. Below is the full conjugation of 유해하다 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 | 유해해요 yoo-hae-hae-yoh yuhaehaeyo | 유해합니다 yoo-hae-hahm-nee-dah yuhaehamnida | |
| Past | 유해했어 yoo-hae-hae-ssuh yuhaehaesseo | 유해했어요 yoo-hae-hae-ssuh-yoh yuhaehaesseoyo | 유해했습니다 yoo-hae-hae-sseum-nee-dah yuhaehaesseumnida |
| Future | 유해할 거야 yoo-hae-hahl guh-yah yuhaehal geoya | 유해할 거예요 yoo-hae-hahl guh-yae-yoh yuhaehal geoyeyo | 유해할 겁니다 yoo-hae-hahl guhm-nee-dah yuhaehal geomnida |
Other useful forms
Honorific / Command Polite (-(으)세요)
유해하세요
yoo-hae-hah-sae-yoh
yuhaehaseyo
Suggestion / Let's Polite (요)
유해해요
yoo-hae-hae-yoh
yuhaehaeyo
Question Polite (요)
유해해요?
yoo-hae-hae-yoh-?
yuhaehaeyo?
Connective "and" — (고)
유해하고
yoo-hae-hah-goh
yuhaehago
Conditional "if" — (면)
유해하면
yoo-hae-hah-myuhn
yuhaehamyeon
Progressive (고 있어요)
유해하고 있어요
yoo-hae-hah-goh ee-ssuh-yoh
yuhaehago isseoyo
Want to (고 싶어요)
유해하고 싶어요
yoo-hae-hah-goh shee-puh-yoh
yuhaehago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
유해할 수 있어요
yoo-hae-hahl soo ee-ssuh-yoh
yuhaehal su isseoyo
Because / So (아/어서)
유해해서
yoo-hae-hae-suh
yuhaehaeseo
Noun form — (기)
유해하기
yoo-hae-hah-gee
yuhaehagi
Noun form — (음)
유해함
yoo-hae-hahm
yuhaeham