Verbseoul.
regular
나서다naseodato go forth

To say to go forth politely in the present tense, use 나서요 (nah-suh-yoh). Below is the full conjugation of 나서다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
나서
nah-suh
나서요
nah-suh-yoh
나섭니다
nah-suhm-nee-dah
Past
나섰어
nah-suh-ssuh
나섰어요
nah-suh-ssuh-yoh
나섰습니다
nah-suh-sseum-nee-dah
Future
나설 거야
nah-suhl- -guh-yah
나설 거예요
nah-suhl- -guh-yae-yoh
나설 겁니다
nah-suhl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
나서세요
nah-suh-sae-yoh
Suggestion / Let's Polite (요)
나서요
nah-suh-yoh
Question Polite (요)
나서요?
nah-suh-yoh-?
Connective “and” — (고)
나서고
nah-suh-goh
Conditional “if” — (면)
나서면
nah-suh-myuhn
Noun form — (기)
나섬
nah-suhm