Verbseoul.
ㄹ stem (adj)
설다seoldaunripe, green, undercooked, half-boiled, immature

To say unripe, green, undercooked, half-boiled, immature politely in the present tense, use 설어요 (suh-ruh-yoh). Below is the full conjugation of 설다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
설어
suh-ruh
설어요
suh-ruh-yoh
섭니다
suhm-nee-dah
Past
설었어
suh-ruh-ssuh
설었어요
suh-ruh-ssuh-yoh
설었습니다
suh-ruh-sseum-nee-dah
Future
설 거야
suhl- -guh-yah
설 거예요
suhl- -guh-yae-yoh
설 겁니다
suhl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
서세요
suh-sae-yoh
Suggestion / Let's Polite (요)
설어요
suh-ruh-yoh
Question Polite (요)
설어요?
suh-ruh-yoh-?
Connective “and” — (고)
설고
suhl-goh
Conditional “if” — (면)
설면
suhl-myuhn
Noun form — (기)
suhm