Verbseoul.Korean verb conjugator
으 irregular (adj)
나쁘다nappeudato be bad

To say to be bad politely in the present tense, use 나빠요 (nah-bbah-yoh). Below is the full conjugation of 나쁘다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
나빠
nah-bbah
나빠요
nah-bbah-yoh
나쁩니다
nah-bbeum-nee-dah
Past
나빴어
nah-bbah-ssuh
나빴어요
nah-bbah-ssuh-yoh
나빴습니다
nah-bbah-sseum-nee-dah
Future
나쁠 거야
nah-bbeul- -guh-yah
나쁠 거예요
nah-bbeul- -guh-yae-yoh
나쁠 겁니다
nah-bbeul- -guhm-nee-dah

Other useful forms

Command Polite (세요)
나쁘세요
nah-bbeu-sae-yoh
Suggestion / Let's Polite (요)
나빠요
nah-bbah-yoh
Question Polite (요)
나빠요?
nah-bbah-yoh-?
Connective “and” — (고)
나쁘고
nah-bbeu-goh
Conditional “if” — (면)
나쁘면
nah-bbeu-myuhn
Noun form — (기)
나쁨
nah-bbeum