Verbseoul.
ㄹ stem (adj)
잘다jaldato be small, to little, to fine, to be tiny, to be thin

To say to be small, to little, to fine, to be tiny, to be thin politely in the present tense, use 잘아요 (chah-rah-yoh). Below is the full conjugation of 잘다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
잘아
chah-rah
잘아요
chah-rah-yoh
잡니다
chahm-nee-dah
Past
잘았어
chah-rah-ssuh
잘았어요
chah-rah-ssuh-yoh
잘았습니다
chah-rah-sseum-nee-dah
Future
잘 거야
chahl- -guh-yah
잘 거예요
chahl- -guh-yae-yoh
잘 겁니다
chahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
자세요
chah-sae-yoh
Suggestion / Let's Polite (요)
잘아요
chah-rah-yoh
Question Polite (요)
잘아요?
chah-rah-yoh-?
Connective “and” — (고)
잘고
chahl-goh
Conditional “if” — (면)
잘면
chahl-myuhn
Noun form — (기)
chahm