Verbseoul.
하다 verb (adj)
멍하다meonghadaabsentminded

To say absentminded politely in the present tense, use 멍해요 (muhng-hae-yoh). Below is the full conjugation of 멍하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
멍해
muhng-hae
멍해요
muhng-hae-yoh
멍합니다
muhng-hahm-nee-dah
Past
멍했어
muhng-hae-ssuh
멍했어요
muhng-hae-ssuh-yoh
멍했습니다
muhng-hae-sseum-nee-dah
Future
멍할 거야
muhng-hahl- -guh-yah
멍할 거예요
muhng-hahl- -guh-yae-yoh
멍할 겁니다
muhng-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
멍하세요
muhng-hah-sae-yoh
Suggestion / Let's Polite (요)
멍해요
muhng-hae-yoh
Question Polite (요)
멍해요?
muhng-hae-yoh-?
Connective “and” — (고)
멍하고
muhng-hah-goh
Conditional “if” — (면)
멍하면
muhng-hah-myuhn
Noun form — (기)
멍함
muhng-hahm