Verbseoul.
하다 verb (adj)
무엇하다mueothadaUsed other than figuratively or idiomatically: see 무엇 (mueot), 하다 (had

To say Used other than figuratively or idiomatically: see 무엇 (mueot), 하다 (had politely in the present tense, use 무엇해요 (moo-uh-tae-yoh). Below is the full conjugation of 무엇하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
무엇해
moo-uh-tae
무엇해요
moo-uh-tae-yoh
무엇합니다
moo-uh-tahm-nee-dah
Past
무엇했어
moo-uh-tae-ssuh
무엇했어요
moo-uh-tae-ssuh-yoh
무엇했습니다
moo-uh-tae-sseum-nee-dah
Future
무엇할 거야
moo-uh-tahl- -guh-yah
무엇할 거예요
moo-uh-tahl- -guh-yae-yoh
무엇할 겁니다
moo-uh-tahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
무엇하세요
moo-uh-tah-sae-yoh
Suggestion / Let's Polite (요)
무엇해요
moo-uh-tae-yoh
Question Polite (요)
무엇해요?
moo-uh-tae-yoh-?
Connective “and” — (고)
무엇하고
moo-uh-tah-goh
Conditional “if” — (면)
무엇하면
moo-uh-tah-myuhn
Noun form — (기)
무엇함
moo-uh-tahm