Verbseoul.
하다 verb (adj)

고요하다 conjugation (goyohada, to be silent, to be tranquil)

To say to be silent, to be tranquil politely in the present tense, use 고요해요 (goh-yoh-hae-yoh) · goyohaeyo. Below is the full conjugation of 고요하다 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
고요해
goh-yoh-hae
goyohae
고요해요
goh-yoh-hae-yoh
goyohaeyo
고요합니다
goh-yoh-hahm-nee-dah
goyohamnida
Past
고요했어
goh-yoh-hae-ssuh
goyohaesseo
고요했어요
goh-yoh-hae-ssuh-yoh
goyohaesseoyo
고요했습니다
goh-yoh-hae-sseum-nee-dah
goyohaesseumnida
Future
고요할 거야
goh-yoh-hahl guh-yah
goyohal geoya
고요할 거예요
goh-yoh-hahl guh-yae-yoh
goyohal geoyeyo
고요할 겁니다
goh-yoh-hahl guhm-nee-dah
goyohal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
고요하세요
goh-yoh-hah-sae-yoh
goyohaseyo
Suggestion / Let's Polite (요)
고요해요
goh-yoh-hae-yoh
goyohaeyo
Question Polite (요)
고요해요?
goh-yoh-hae-yoh-?
goyohaeyo?
Connective "and" — (고)
고요하고
goh-yoh-hah-goh
goyohago
Conditional "if" — (면)
고요하면
goh-yoh-hah-myuhn
goyohamyeon
Progressive (고 있어요)
고요하고 있어요
goh-yoh-hah-goh ee-ssuh-yoh
goyohago isseoyo
Want to (고 싶어요)
고요하고 싶어요
goh-yoh-hah-goh shee-puh-yoh
goyohago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
고요할 수 있어요
goh-yoh-hahl soo ee-ssuh-yoh
goyohal su isseoyo
Because / So (아/어서)
고요해서
goh-yoh-hae-suh
goyohaeseo
Noun form — (기)
고요하기
goh-yoh-hah-gee
goyohagi
Noun form — (음)
고요함
goh-yoh-hahm
goyoham