Verbseoul.
descriptive
점잖다jeomjandawell behaved, dignified, respectable, gentle

To say well behaved, dignified, respectable, gentle politely in the present tense, use 점잖아요 (chuhm-chahn-ah-yoh). Below is the full conjugation of 점잖다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
점잖아
chuhm-chahn-ah
점잖아요
chuhm-chahn-ah-yoh
점잖습니다
chuhm-chahn-seum-nee-dah
Past
점잖았어
chuhm-chahn-ah-ssuh
점잖았어요
chuhm-chahn-ah-ssuh-yoh
점잖았습니다
chuhm-chahn-ah-sseum-nee-dah
Future
점잖을 거야
chuhm-chahn-eul- -guh-yah
점잖을 거예요
chuhm-chahn-eul- -guh-yae-yoh
점잖을 겁니다
chuhm-chahn-eul- -guhm-nee-dah

Other useful forms

Command Polite (세요)
점잖으세요
chuhm-chahn-eu-sae-yoh
Suggestion / Let's Polite (요)
점잖아요
chuhm-chahn-ah-yoh
Question Polite (요)
점잖아요?
chuhm-chahn-ah-yoh-?
Connective “and” — (고)
점잖고
chuhm-chahn-goh
Conditional “if” — (면)
점잖으면
chuhm-chahn-eu-myuhn
Noun form — (기)
점잖음
chuhm-chahn-eum