Verbseoul.
하다 verb (adj)

얌전하다 conjugation (yamjeonhada, gentle, meek, obedient)

To say gentle, meek, obedient politely in the present tense, use 얌전해요 (yahm-chuhn-hae-yoh) · yamjeonhaeyo. Below is the full conjugation of 얌전하다 across the three tenses and three everyday speech levels.

Grammar note (하다 verb (adj)): 하다 adjectives use the same verb 하다 as a suffix to turn descriptive nouns into predicates (행복하다 = to be happy). They conjugate identically to 하다 verbs: the 하 contracts before -아/-어 suffixes to give 해. 행복해요, 행복했어요, 행복합니다. See all 하다 verbs →

Conjugation table

pron. = pronunciation guide  · RR = Revised Romanization

Highlighted = where the stem changes

TenseCasual (반말)Polite (요)Formal (합니다)
Present
얌전해
yahm-chuhn-hae
yamjeonhae
얌전해요
yahm-chuhn-hae-yoh
yamjeonhaeyo
얌전합니다
yahm-chuhn-hahm-nee-dah
yamjeonhamnida
Past
얌전했어
yahm-chuhn-hae-ssuh
yamjeonhaesseo
얌전했어요
yahm-chuhn-hae-ssuh-yoh
yamjeonhaesseoyo
얌전했습니다
yahm-chuhn-hae-sseum-nee-dah
yamjeonhaesseumnida
Future
얌전할 거야
yahm-chuhn-hahl guh-yah
yamjeonhal geoya
얌전할 거예요
yahm-chuhn-hahl guh-yae-yoh
yamjeonhal geoyeyo
얌전할 겁니다
yahm-chuhn-hahl guhm-nee-dah
yamjeonhal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
얌전하세요
yahm-chuhn-hah-sae-yoh
yamjeonhaseyo
Suggestion / Let's Polite (요)
얌전해요
yahm-chuhn-hae-yoh
yamjeonhaeyo
Question Polite (요)
얌전해요?
yahm-chuhn-hae-yoh-?
yamjeonhaeyo?
Connective "and" — (고)
얌전하고
yahm-chuhn-hah-goh
yamjeonhago
Conditional "if" — (면)
얌전하면
yahm-chuhn-hah-myuhn
yamjeonhamyeon
Progressive (고 있어요)
얌전하고 있어요
yahm-chuhn-hah-goh ee-ssuh-yoh
yamjeonhago isseoyo
Want to (고 싶어요)
얌전하고 싶어요
yahm-chuhn-hah-goh shee-puh-yoh
yamjeonhago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
얌전할 수 있어요
yahm-chuhn-hahl soo ee-ssuh-yoh
yamjeonhal su isseoyo
Because / So (아/어서)
얌전해서
yahm-chuhn-hae-suh
yamjeonhaeseo
Noun form — (기)
얌전하기
yahm-chuhn-hah-gee
yamjeonhagi
Noun form — (음)
얌전함
yahm-chuhn-hahm
yamjeonham