Verbseoul.
regular
무너지다muneojidato collapse

To say to collapse politely in the present tense, use 무너져요 (moo-nuh-chyuh-yoh). Below is the full conjugation of 무너지다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
무너져
moo-nuh-chyuh
무너져요
moo-nuh-chyuh-yoh
무너집니다
moo-nuh-cheem-nee-dah
Past
무너졌어
moo-nuh-chyuh-ssuh
무너졌어요
moo-nuh-chyuh-ssuh-yoh
무너졌습니다
moo-nuh-chyuh-sseum-nee-dah
Future
무너질 거야
moo-nuh-cheel- -guh-yah
무너질 거예요
moo-nuh-cheel- -guh-yae-yoh
무너질 겁니다
moo-nuh-cheel- -guhm-nee-dah

Other useful forms

Command Polite (세요)
무너지세요
moo-nuh-chee-sae-yoh
Suggestion / Let's Polite (요)
무너져요
moo-nuh-chyuh-yoh
Question Polite (요)
무너져요?
moo-nuh-chyuh-yoh-?
Connective “and” — (고)
무너지고
moo-nuh-chee-goh
Conditional “if” — (면)
무너지면
moo-nuh-chee-myuhn
Noun form — (기)
무너짐
moo-nuh-cheem