Verbseoul.
descriptive
궂다gutda-2to be bad

To say to be bad politely in the present tense, use 궂어요 (goo-chuh-yoh). Below is the full conjugation of 궂다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
궂어
goo-chuh
궂어요
goo-chuh-yoh
궂습니다
goot-seum-nee-dah
Past
궂었어
goo-chuh-ssuh
궂었어요
goo-chuh-ssuh-yoh
궂었습니다
goo-chuh-sseum-nee-dah
Future
궂을 거야
goo-cheul- -guh-yah
궂을 거예요
goo-cheul- -guh-yae-yoh
궂을 겁니다
goo-cheul- -guhm-nee-dah

Other useful forms

Command Polite (세요)
궂으세요
goo-cheu-sae-yoh
Suggestion / Let's Polite (요)
궂어요
goo-chuh-yoh
Question Polite (요)
궂어요?
goo-chuh-yoh-?
Connective “and” — (고)
궂고
goot-goh
Conditional “if” — (면)
궂으면
goo-cheu-myuhn
Noun form — (기)
궂음
goo-cheum