Verbseoul.
regular
잠자다jamjadato sleep

To say to sleep politely in the present tense, use 잠자요 (chahm-chah-yoh). Below is the full conjugation of 잠자다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
잠자
chahm-chah
잠자요
chahm-chah-yoh
잠잡니다
chahm-chahm-nee-dah
Past
잠잤어
chahm-chah-ssuh
잠잤어요
chahm-chah-ssuh-yoh
잠잤습니다
chahm-chah-sseum-nee-dah
Future
잠잘 거야
chahm-chahl- -guh-yah
잠잘 거예요
chahm-chahl- -guh-yae-yoh
잠잘 겁니다
chahm-chahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
잠자세요
chahm-chah-sae-yoh
Suggestion / Let's Polite (요)
잠자요
chahm-chah-yoh
Question Polite (요)
잠자요?
chahm-chah-yoh-?
Connective “and” — (고)
잠자고
chahm-chah-goh
Conditional “if” — (면)
잠자면
chahm-chah-myuhn
Noun form — (기)
잠잠
chahm-chahm