Verbseoul.
하다 verb (adj)

조용하다 conjugation (joyonghada, to be silent, quiet, still, calm, empty, sedate)

To say to be silent, quiet, still, calm, empty, sedate politely in the present tense, use 조용해요 (choh-yohng-hae-yoh) · joyonghaeyo. Below is the full conjugation of 조용하다 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
조용해
choh-yohng-hae
joyonghae
조용해요
choh-yohng-hae-yoh
joyonghaeyo
조용합니다
choh-yohng-hahm-nee-dah
joyonghamnida
Past
조용했어
choh-yohng-hae-ssuh
joyonghaesseo
조용했어요
choh-yohng-hae-ssuh-yoh
joyonghaesseoyo
조용했습니다
choh-yohng-hae-sseum-nee-dah
joyonghaesseumnida
Future
조용할 거야
choh-yohng-hahl guh-yah
joyonghal geoya
조용할 거예요
choh-yohng-hahl guh-yae-yoh
joyonghal geoyeyo
조용할 겁니다
choh-yohng-hahl guhm-nee-dah
joyonghal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
조용하세요
choh-yohng-hah-sae-yoh
joyonghaseyo
Suggestion / Let's Polite (요)
조용해요
choh-yohng-hae-yoh
joyonghaeyo
Question Polite (요)
조용해요?
choh-yohng-hae-yoh-?
joyonghaeyo?
Connective "and" — (고)
조용하고
choh-yohng-hah-goh
joyonghago
Conditional "if" — (면)
조용하면
choh-yohng-hah-myuhn
joyonghamyeon
Progressive (고 있어요)
조용하고 있어요
choh-yohng-hah-goh ee-ssuh-yoh
joyonghago isseoyo
Want to (고 싶어요)
조용하고 싶어요
choh-yohng-hah-goh shee-puh-yoh
joyonghago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
조용할 수 있어요
choh-yohng-hahl soo ee-ssuh-yoh
joyonghal su isseoyo
Because / So (아/어서)
조용해서
choh-yohng-hae-suh
joyonghaeseo
Noun form — (기)
조용하기
choh-yohng-hah-gee
joyonghagi
Noun form — (음)
조용함
choh-yohng-hahm
joyongham