Verbseoul.
descriptive
떫다tteolda-2to be astringent, to be caustic

To say to be astringent, to be caustic politely in the present tense, use 떫어요 (ttuhl-uh-yoh). Below is the full conjugation of 떫다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
떫어
ttuhl-uh
떫어요
ttuhl-uh-yoh
떫습니다
ttuhl-seum-nee-dah
Past
떫었어
ttuhl-uh-ssuh
떫었어요
ttuhl-uh-ssuh-yoh
떫었습니다
ttuhl-uh-sseum-nee-dah
Future
떫을 거야
ttuhl-eul- -guh-yah
떫을 거예요
ttuhl-eul- -guh-yae-yoh
떫을 겁니다
ttuhl-eul- -guhm-nee-dah

Other useful forms

Command Polite (세요)
떫으세요
ttuhl-eu-sae-yoh
Suggestion / Let's Polite (요)
떫어요
ttuhl-uh-yoh
Question Polite (요)
떫어요?
ttuhl-uh-yoh-?
Connective “and” — (고)
떫고
ttuhl-goh
Conditional “if” — (면)
떫으면
ttuhl-eu-myuhn
Noun form — (기)
떫음
ttuhl-eum