Verbseoul.
하다 verb

거부하다 conjugation (geobuhada, to refuse)

To say to refuse politely in the present tense, use 거부해요 (guh-boo-hae-yoh) · geobuhaeyo. Below is the full conjugation of 거부하다 across the three tenses and three everyday speech levels.

Grammar note (하다 verb): 하다 verbs are formed with a Sino-Korean noun + 하다 (e.g. 공부하다 = study + do). 하다 conjugates irregularly: the ㅏ in 하 contracts with the -아/-어 suffix to give 해 (not *하어). Present polite: 해요; past polite: 했어요. The formal ending is 합니다 (not *하습니다). Most noun+하다 compounds follow this pattern uniformly. See all 하다 verbs →

Conjugation table

pron. = pronunciation guide  · RR = Revised Romanization

Highlighted = where the stem changes

TenseCasual (반말)Polite (요)Formal (합니다)
Present
거부해
guh-boo-hae
geobuhae
거부해요
guh-boo-hae-yoh
geobuhaeyo
거부합니다
guh-boo-hahm-nee-dah
geobuhamnida
Past
거부했어
guh-boo-hae-ssuh
geobuhaesseo
거부했어요
guh-boo-hae-ssuh-yoh
geobuhaesseoyo
거부했습니다
guh-boo-hae-sseum-nee-dah
geobuhaesseumnida
Future
거부할 거야
guh-boo-hahl guh-yah
geobuhal geoya
거부할 거예요
guh-boo-hahl guh-yae-yoh
geobuhal geoyeyo
거부할 겁니다
guh-boo-hahl guhm-nee-dah
geobuhal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
거부하세요
guh-boo-hah-sae-yoh
geobuhaseyo
Suggestion / Let's Polite (요)
거부해요
guh-boo-hae-yoh
geobuhaeyo
Question Polite (요)
거부해요?
guh-boo-hae-yoh-?
geobuhaeyo?
Connective "and" — (고)
거부하고
guh-boo-hah-goh
geobuhago
Conditional "if" — (면)
거부하면
guh-boo-hah-myuhn
geobuhamyeon
Progressive (고 있어요)
거부하고 있어요
guh-boo-hah-goh ee-ssuh-yoh
geobuhago isseoyo
Want to (고 싶어요)
거부하고 싶어요
guh-boo-hah-goh shee-puh-yoh
geobuhago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
거부할 수 있어요
guh-boo-hahl soo ee-ssuh-yoh
geobuhal su isseoyo
Because / So (아/어서)
거부해서
guh-boo-hae-suh
geobuhaeseo
Noun form — (기)
거부하기
guh-boo-hah-gee
geobuhagi
Noun form — (음)
거부함
guh-boo-hahm
geobuham