Verbseoul.
하다 verb
설득하다seoldeukhadato persuade

To say to persuade politely in the present tense, use 설득해요 (suhl-deu-kae-yoh). Below is the full conjugation of 설득하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
설득해
suhl-deu-kae
설득해요
suhl-deu-kae-yoh
설득합니다
suhl-deu-kahm-nee-dah
Past
설득했어
suhl-deu-kae-ssuh
설득했어요
suhl-deu-kae-ssuh-yoh
설득했습니다
suhl-deu-kae-sseum-nee-dah
Future
설득할 거야
suhl-deu-kahl- -guh-yah
설득할 거예요
suhl-deu-kahl- -guh-yae-yoh
설득할 겁니다
suhl-deu-kahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
설득하세요
suhl-deu-kah-sae-yoh
Suggestion / Let's Polite (요)
설득해요
suhl-deu-kae-yoh
Question Polite (요)
설득해요?
suhl-deu-kae-yoh-?
Connective “and” — (고)
설득하고
suhl-deu-kah-goh
Conditional “if” — (면)
설득하면
suhl-deu-kah-myuhn
Noun form — (기)
설득함
suhl-deu-kahm