Verbseoul.
하다 verb (adj)
뻔뻔하다ppeonppeonhadashameless

To say shameless politely in the present tense, use 뻔뻔해요 (bbuhn-bbuhn-hae-yoh). Below is the full conjugation of 뻔뻔하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
뻔뻔해
bbuhn-bbuhn-hae
뻔뻔해요
bbuhn-bbuhn-hae-yoh
뻔뻔합니다
bbuhn-bbuhn-hahm-nee-dah
Past
뻔뻔했어
bbuhn-bbuhn-hae-ssuh
뻔뻔했어요
bbuhn-bbuhn-hae-ssuh-yoh
뻔뻔했습니다
bbuhn-bbuhn-hae-sseum-nee-dah
Future
뻔뻔할 거야
bbuhn-bbuhn-hahl- -guh-yah
뻔뻔할 거예요
bbuhn-bbuhn-hahl- -guh-yae-yoh
뻔뻔할 겁니다
bbuhn-bbuhn-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
뻔뻔하세요
bbuhn-bbuhn-hah-sae-yoh
Suggestion / Let's Polite (요)
뻔뻔해요
bbuhn-bbuhn-hae-yoh
Question Polite (요)
뻔뻔해요?
bbuhn-bbuhn-hae-yoh-?
Connective “and” — (고)
뻔뻔하고
bbuhn-bbuhn-hah-goh
Conditional “if” — (면)
뻔뻔하면
bbuhn-bbuhn-hah-myuhn
Noun form — (기)
뻔뻔함
bbuhn-bbuhn-hahm