Verbseoul.
descriptive
맛없다mateopdanot tasting good

To say not tasting good politely in the present tense, use 맛없어요 (mah-suhp-ssuh-yoh). Below is the full conjugation of 맛없다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
맛없어
mah-suhp-ssuh
맛없어요
mah-suhp-ssuh-yoh
맛없습니다
mah-suhp-seum-nee-dah
Past
맛없었어
mah-suhp-ssuh-ssuh
맛없었어요
mah-suhp-ssuh-ssuh-yoh
맛없었습니다
mah-suhp-ssuh-sseum-nee-dah
Future
맛없을 거야
mah-suhp-sseul- -guh-yah
맛없을 거예요
mah-suhp-sseul- -guh-yae-yoh
맛없을 겁니다
mah-suhp-sseul- -guhm-nee-dah

Other useful forms

Command Polite (세요)
맛없으세요
mah-suhp-sseu-sae-yoh
Suggestion / Let's Polite (요)
맛없어요
mah-suhp-ssuh-yoh
Question Polite (요)
맛없어요?
mah-suhp-ssuh-yoh-?
Connective “and” — (고)
맛없고
mah-suhp-goh
Conditional “if” — (면)
맛없으면
mah-suhp-sseu-myuhn
Noun form — (기)
맛없음
mah-suhp-sseum