Verbseoul.
하다 verb (adj)

잔잔하다 conjugation (janjanhada, calm)

To say calm politely in the present tense, use 잔잔해요 (chahn-chahn-hae-yoh) · janjanhaeyo. Below is the full conjugation of 잔잔하다 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
잔잔해
chahn-chahn-hae
janjanhae
잔잔해요
chahn-chahn-hae-yoh
janjanhaeyo
잔잔합니다
chahn-chahn-hahm-nee-dah
janjanhamnida
Past
잔잔했어
chahn-chahn-hae-ssuh
janjanhaesseo
잔잔했어요
chahn-chahn-hae-ssuh-yoh
janjanhaesseoyo
잔잔했습니다
chahn-chahn-hae-sseum-nee-dah
janjanhaesseumnida
Future
잔잔할 거야
chahn-chahn-hahl guh-yah
janjanhal geoya
잔잔할 거예요
chahn-chahn-hahl guh-yae-yoh
janjanhal geoyeyo
잔잔할 겁니다
chahn-chahn-hahl guhm-nee-dah
janjanhal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
잔잔하세요
chahn-chahn-hah-sae-yoh
janjanhaseyo
Suggestion / Let's Polite (요)
잔잔해요
chahn-chahn-hae-yoh
janjanhaeyo
Question Polite (요)
잔잔해요?
chahn-chahn-hae-yoh-?
janjanhaeyo?
Connective "and" — (고)
잔잔하고
chahn-chahn-hah-goh
janjanhago
Conditional "if" — (면)
잔잔하면
chahn-chahn-hah-myuhn
janjanhamyeon
Progressive (고 있어요)
잔잔하고 있어요
chahn-chahn-hah-goh ee-ssuh-yoh
janjanhago isseoyo
Want to (고 싶어요)
잔잔하고 싶어요
chahn-chahn-hah-goh shee-puh-yoh
janjanhago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
잔잔할 수 있어요
chahn-chahn-hahl soo ee-ssuh-yoh
janjanhal su isseoyo
Because / So (아/어서)
잔잔해서
chahn-chahn-hae-suh
janjanhaeseo
Noun form — (기)
잔잔하기
chahn-chahn-hah-gee
janjanhagi
Noun form — (음)
잔잔함
chahn-chahn-hahm
janjanham