Verbseoul.
regular
꺼지다kkeojidato be extinguished

To say to be extinguished politely in the present tense, use 꺼져요 (gguh-chyuh-yoh). Below is the full conjugation of 꺼지다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
꺼져
gguh-chyuh
꺼져요
gguh-chyuh-yoh
꺼집니다
gguh-cheem-nee-dah
Past
꺼졌어
gguh-chyuh-ssuh
꺼졌어요
gguh-chyuh-ssuh-yoh
꺼졌습니다
gguh-chyuh-sseum-nee-dah
Future
꺼질 거야
gguh-cheel- -guh-yah
꺼질 거예요
gguh-cheel- -guh-yae-yoh
꺼질 겁니다
gguh-cheel- -guhm-nee-dah

Other useful forms

Command Polite (세요)
꺼지세요
gguh-chee-sae-yoh
Suggestion / Let's Polite (요)
꺼져요
gguh-chyuh-yoh
Question Polite (요)
꺼져요?
gguh-chyuh-yoh-?
Connective “and” — (고)
꺼지고
gguh-chee-goh
Conditional “if” — (면)
꺼지면
gguh-chee-myuhn
Noun form — (기)
꺼짐
gguh-cheem