Verbseoul.
ㅎ irregular (adj)
시꺼멓다sikkeomeotdadeep-black, sooted

To say deep-black, sooted politely in the present tense, use 시꺼매요 (shee-gguh-mae-yoh). Below is the full conjugation of 시꺼멓다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
시꺼매
shee-gguh-mae
시꺼매요
shee-gguh-mae-yoh
시꺼멓습니다
shee-gguh-muh-sseum-nee-dah
Past
시꺼맸어
shee-gguh-mae-ssuh
시꺼맸어요
shee-gguh-mae-ssuh-yoh
시꺼맸습니다
shee-gguh-mae-sseum-nee-dah
Future
시꺼멀 거야
shee-gguh-muhl- -guh-yah
시꺼멀 거예요
shee-gguh-muhl- -guh-yae-yoh
시꺼멀 겁니다
shee-gguh-muhl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
시꺼머세요
shee-gguh-muh-sae-yoh
Suggestion / Let's Polite (요)
시꺼매요
shee-gguh-mae-yoh
Question Polite (요)
시꺼매요?
shee-gguh-mae-yoh-?
Connective “and” — (고)
시꺼멓고
shee-gguh-muh-koh
Conditional “if” — (면)
시꺼머면
shee-gguh-muh-myuhn
Noun form — (기)
시꺼멈
shee-gguh-muhm