Verbseoul.
하다 verb
잘못하다jalmothadato err

To say to err politely in the present tense, use 잘못해요 (chahl-moh-tae-yoh). Below is the full conjugation of 잘못하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
잘못해
chahl-moh-tae
잘못해요
chahl-moh-tae-yoh
잘못합니다
chahl-moh-tahm-nee-dah
Past
잘못했어
chahl-moh-tae-ssuh
잘못했어요
chahl-moh-tae-ssuh-yoh
잘못했습니다
chahl-moh-tae-sseum-nee-dah
Future
잘못할 거야
chahl-moh-tahl- -guh-yah
잘못할 거예요
chahl-moh-tahl- -guh-yae-yoh
잘못할 겁니다
chahl-moh-tahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
잘못하세요
chahl-moh-tah-sae-yoh
Suggestion / Let's Polite (요)
잘못해요
chahl-moh-tae-yoh
Question Polite (요)
잘못해요?
chahl-moh-tae-yoh-?
Connective “and” — (고)
잘못하고
chahl-moh-tah-goh
Conditional “if” — (면)
잘못하면
chahl-moh-tah-myuhn
Noun form — (기)
잘못함
chahl-moh-tahm