Verbseoul.
하다 verb (adj)

유독하다 conjugation (yudokhada, poisonous)

To say poisonous politely in the present tense, use 유독해요 (yoo-doh-kae-yoh) · yudokaeyo. Below is the full conjugation of 유독하다 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

TenseCasual (반말)Polite (요)Formal (합니다)
Present
유독해
yoo-doh-kae
yudokae
유독해요
yoo-doh-kae-yoh
yudokaeyo
유독합니다
yoo-doh-kahm-nee-dah
yudokamnida
Past
유독했어
yoo-doh-kae-ssuh
yudokaesseo
유독했어요
yoo-doh-kae-ssuh-yoh
yudokaesseoyo
유독했습니다
yoo-doh-kae-sseum-nee-dah
yudokaesseumnida
Future
유독할 거야
yoo-doh-kahl guh-yah
yudokal geoya
유독할 거예요
yoo-doh-kahl guh-yae-yoh
yudokal geoyeyo
유독할 겁니다
yoo-doh-kahl guhm-nee-dah
yudokal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
유독하세요
yoo-doh-kah-sae-yoh
yudokaseyo
Suggestion / Let's Polite (요)
유독해요
yoo-doh-kae-yoh
yudokaeyo
Question Polite (요)
유독해요?
yoo-doh-kae-yoh-?
yudokaeyo?
Connective "and" — (고)
유독하고
yoo-doh-kah-goh
yudokago
Conditional "if" — (면)
유독하면
yoo-doh-kah-myuhn
yudokamyeon
Progressive (고 있어요)
유독하고 있어요
yoo-doh-kah-goh ee-ssuh-yoh
yudokago isseoyo
Want to (고 싶어요)
유독하고 싶어요
yoo-doh-kah-goh shee-puh-yoh
yudokago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
유독할 수 있어요
yoo-doh-kahl soo ee-ssuh-yoh
yudokal su isseoyo
Because / So (아/어서)
유독해서
yoo-doh-kae-suh
yudokaeseo
Noun form — (기)
유독하기
yoo-doh-kah-gee
yudokagi
Noun form — (음)
유독함
yoo-doh-kahm
yudokam