Verbseoul.
regular
막히다makhidato become blocked or closed

To say to become blocked or closed politely in the present tense, use 막혀요 (mah-kyuh-yoh). Below is the full conjugation of 막히다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
막혀
mah-kyuh
막혀요
mah-kyuh-yoh
막힙니다
mah-keem-nee-dah
Past
막혔어
mah-kyuh-ssuh
막혔어요
mah-kyuh-ssuh-yoh
막혔습니다
mah-kyuh-sseum-nee-dah
Future
막힐 거야
mah-keel- -guh-yah
막힐 거예요
mah-keel- -guh-yae-yoh
막힐 겁니다
mah-keel- -guhm-nee-dah

Other useful forms

Command Polite (세요)
막히세요
mah-kee-sae-yoh
Suggestion / Let's Polite (요)
막혀요
mah-kyuh-yoh
Question Polite (요)
막혀요?
mah-kyuh-yoh-?
Connective “and” — (고)
막히고
mah-kee-goh
Conditional “if” — (면)
막히면
mah-kee-myuhn
Noun form — (기)
막힘
mah-keem