Verbseoul.
하다 verb
부정하다bujeonghadato deny

To say to deny politely in the present tense, use 부정해요 (boo-chuhng-hae-yoh). Below is the full conjugation of 부정하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
부정해
boo-chuhng-hae
부정해요
boo-chuhng-hae-yoh
부정합니다
boo-chuhng-hahm-nee-dah
Past
부정했어
boo-chuhng-hae-ssuh
부정했어요
boo-chuhng-hae-ssuh-yoh
부정했습니다
boo-chuhng-hae-sseum-nee-dah
Future
부정할 거야
boo-chuhng-hahl- -guh-yah
부정할 거예요
boo-chuhng-hahl- -guh-yae-yoh
부정할 겁니다
boo-chuhng-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
부정하세요
boo-chuhng-hah-sae-yoh
Suggestion / Let's Polite (요)
부정해요
boo-chuhng-hae-yoh
Question Polite (요)
부정해요?
boo-chuhng-hae-yoh-?
Connective “and” — (고)
부정하고
boo-chuhng-hah-goh
Conditional “if” — (면)
부정하면
boo-chuhng-hah-myuhn
Noun form — (기)
부정함
boo-chuhng-hahm