Verbseoul.
하다 verb (adj)
뻔하다ppeonhadaclear, obvious, evident

To say clear, obvious, evident politely in the present tense, use 뻔해요 (bbuhn-hae-yoh). Below is the full conjugation of 뻔하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
뻔해
bbuhn-hae
뻔해요
bbuhn-hae-yoh
뻔합니다
bbuhn-hahm-nee-dah
Past
뻔했어
bbuhn-hae-ssuh
뻔했어요
bbuhn-hae-ssuh-yoh
뻔했습니다
bbuhn-hae-sseum-nee-dah
Future
뻔할 거야
bbuhn-hahl- -guh-yah
뻔할 거예요
bbuhn-hahl- -guh-yae-yoh
뻔할 겁니다
bbuhn-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
뻔하세요
bbuhn-hah-sae-yoh
Suggestion / Let's Polite (요)
뻔해요
bbuhn-hae-yoh
Question Polite (요)
뻔해요?
bbuhn-hae-yoh-?
Connective “and” — (고)
뻔하고
bbuhn-hah-goh
Conditional “if” — (면)
뻔하면
bbuhn-hah-myuhn
Noun form — (기)
뻔함
bbuhn-hahm