Verbseoul.
regular
썩다sseokdato rot, to decay

To say to rot, to decay politely in the present tense, use 썩어요 (ssuh-guh-yoh). Below is the full conjugation of 썩다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
썩어
ssuh-guh
썩어요
ssuh-guh-yoh
썩습니다
ssuhg-sseum-nee-dah
Past
썩었어
ssuh-guh-ssuh
썩었어요
ssuh-guh-ssuh-yoh
썩었습니다
ssuh-guh-sseum-nee-dah
Future
썩을 거야
ssuh-geul- -guh-yah
썩을 거예요
ssuh-geul- -guh-yae-yoh
썩을 겁니다
ssuh-geul- -guhm-nee-dah

Other useful forms

Command Polite (세요)
썩으세요
ssuh-geu-sae-yoh
Suggestion / Let's Polite (요)
썩어요
ssuh-guh-yoh
Question Polite (요)
썩어요?
ssuh-guh-yoh-?
Connective “and” — (고)
썩고
ssuhg-ggoh
Conditional “if” — (면)
썩으면
ssuh-geu-myuhn
Noun form — (기)
썩음
ssuh-geum