Verbseoul.
regular
뭉치다mungchidato crumple, mass

To say to crumple, mass politely in the present tense, use 뭉쳐요 (moong-chyuh-yoh). Below is the full conjugation of 뭉치다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
뭉쳐
moong-chyuh
뭉쳐요
moong-chyuh-yoh
뭉칩니다
moong-cheem-nee-dah
Past
뭉쳤어
moong-chyuh-ssuh
뭉쳤어요
moong-chyuh-ssuh-yoh
뭉쳤습니다
moong-chyuh-sseum-nee-dah
Future
뭉칠 거야
moong-cheel- -guh-yah
뭉칠 거예요
moong-cheel- -guh-yae-yoh
뭉칠 겁니다
moong-cheel- -guhm-nee-dah

Other useful forms

Command Polite (세요)
뭉치세요
moong-chee-sae-yoh
Suggestion / Let's Polite (요)
뭉쳐요
moong-chyuh-yoh
Question Polite (요)
뭉쳐요?
moong-chyuh-yoh-?
Connective “and” — (고)
뭉치고
moong-chee-goh
Conditional “if” — (면)
뭉치면
moong-chee-myuhn
Noun form — (기)
뭉침
moong-cheem