Verbseoul.
regular
많아지다manajidato pile up

To say to pile up politely in the present tense, use 많아져요 (mahn-ah-chyuh-yoh). Below is the full conjugation of 많아지다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
많아져
mahn-ah-chyuh
많아져요
mahn-ah-chyuh-yoh
많아집니다
mahn-ah-cheem-nee-dah
Past
많아졌어
mahn-ah-chyuh-ssuh
많아졌어요
mahn-ah-chyuh-ssuh-yoh
많아졌습니다
mahn-ah-chyuh-sseum-nee-dah
Future
많아질 거야
mahn-ah-cheel- -guh-yah
많아질 거예요
mahn-ah-cheel- -guh-yae-yoh
많아질 겁니다
mahn-ah-cheel- -guhm-nee-dah

Other useful forms

Command Polite (세요)
많아지세요
mahn-ah-chee-sae-yoh
Suggestion / Let's Polite (요)
많아져요
mahn-ah-chyuh-yoh
Question Polite (요)
많아져요?
mahn-ah-chyuh-yoh-?
Connective “and” — (고)
많아지고
mahn-ah-chee-goh
Conditional “if” — (면)
많아지면
mahn-ah-chee-myuhn
Noun form — (기)
많아짐
mahn-ah-cheem