Verbseoul.
하다 verb

부정하다 conjugation (bujeonghada, to deny)

To say to deny politely in the present tense, use 부정해요 (boo-chuhng-hae-yoh) · bujeonghaeyo. Below is the full conjugation of 부정하다 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
부정해
boo-chuhng-hae
bujeonghae
부정해요
boo-chuhng-hae-yoh
bujeonghaeyo
부정합니다
boo-chuhng-hahm-nee-dah
bujeonghamnida
Past
부정했어
boo-chuhng-hae-ssuh
bujeonghaesseo
부정했어요
boo-chuhng-hae-ssuh-yoh
bujeonghaesseoyo
부정했습니다
boo-chuhng-hae-sseum-nee-dah
bujeonghaesseumnida
Future
부정할 거야
boo-chuhng-hahl guh-yah
bujeonghal geoya
부정할 거예요
boo-chuhng-hahl guh-yae-yoh
bujeonghal geoyeyo
부정할 겁니다
boo-chuhng-hahl guhm-nee-dah
bujeonghal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
부정하세요
boo-chuhng-hah-sae-yoh
bujeonghaseyo
Suggestion / Let's Polite (요)
부정해요
boo-chuhng-hae-yoh
bujeonghaeyo
Question Polite (요)
부정해요?
boo-chuhng-hae-yoh-?
bujeonghaeyo?
Connective "and" — (고)
부정하고
boo-chuhng-hah-goh
bujeonghago
Conditional "if" — (면)
부정하면
boo-chuhng-hah-myuhn
bujeonghamyeon
Progressive (고 있어요)
부정하고 있어요
boo-chuhng-hah-goh ee-ssuh-yoh
bujeonghago isseoyo
Want to (고 싶어요)
부정하고 싶어요
boo-chuhng-hah-goh shee-puh-yoh
bujeonghago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
부정할 수 있어요
boo-chuhng-hahl soo ee-ssuh-yoh
bujeonghal su isseoyo
Because / So (아/어서)
부정해서
boo-chuhng-hae-suh
bujeonghaeseo
Noun form — (기)
부정하기
boo-chuhng-hah-gee
bujeonghagi
Noun form — (음)
부정함
boo-chuhng-hahm
bujeongham