Verbseoul.
하다 verb (adj)
악하다akhadaevil, bad, wicked, vile

To say evil, bad, wicked, vile politely in the present tense, use 악해요 (ah-kae-yoh). Below is the full conjugation of 악하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
악해
ah-kae
악해요
ah-kae-yoh
악합니다
ah-kahm-nee-dah
Past
악했어
ah-kae-ssuh
악했어요
ah-kae-ssuh-yoh
악했습니다
ah-kae-sseum-nee-dah
Future
악할 거야
ah-kahl- -guh-yah
악할 거예요
ah-kahl- -guh-yae-yoh
악할 겁니다
ah-kahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
악하세요
ah-kah-sae-yoh
Suggestion / Let's Polite (요)
악해요
ah-kae-yoh
Question Polite (요)
악해요?
ah-kae-yoh-?
Connective “and” — (고)
악하고
ah-kah-goh
Conditional “if” — (면)
악하면
ah-kah-myuhn
Noun form — (기)
악함
ah-kahm