Verbseoul.
하다 verb (adj)
악랄하다akralhadavicious

To say vicious politely in the present tense, use 악랄해요 (ahng-nahl-hae-yoh). Below is the full conjugation of 악랄하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
악랄해
ahng-nahl-hae
악랄해요
ahng-nahl-hae-yoh
악랄합니다
ahng-nahl-hahm-nee-dah
Past
악랄했어
ahng-nahl-hae-ssuh
악랄했어요
ahng-nahl-hae-ssuh-yoh
악랄했습니다
ahng-nahl-hae-sseum-nee-dah
Future
악랄할 거야
ahng-nahl-hahl- -guh-yah
악랄할 거예요
ahng-nahl-hahl- -guh-yae-yoh
악랄할 겁니다
ahng-nahl-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
악랄하세요
ahng-nahl-hah-sae-yoh
Suggestion / Let's Polite (요)
악랄해요
ahng-nahl-hae-yoh
Question Polite (요)
악랄해요?
ahng-nahl-hae-yoh-?
Connective “and” — (고)
악랄하고
ahng-nahl-hah-goh
Conditional “if” — (면)
악랄하면
ahng-nahl-hah-myuhn
Noun form — (기)
악랄함
ahng-nahl-hahm