Verbseoul.
하다 verb

침묵하다 conjugation (chimmukhada, to be silent, reticent, to be quiet)

To say to be silent, reticent, to be quiet politely in the present tense, use 침묵해요 (cheem-moo-kae-yoh) · chimmukaeyo. Below is the full conjugation of 침묵하다 across the three tenses and three everyday speech levels.

Grammar note (하다 verb): 하다 verbs are formed with a Sino-Korean noun + 하다 (e.g. 공부하다 = study + do). 하다 conjugates irregularly: the ㅏ in 하 contracts with the -아/-어 suffix to give 해 (not *하어). Present polite: 해요; past polite: 했어요. The formal ending is 합니다 (not *하습니다). Most noun+하다 compounds follow this pattern uniformly. See all 하다 verbs →

Conjugation table

pron. = pronunciation guide  · RR = Revised Romanization

Highlighted = where the stem changes

TenseCasual (반말)Polite (요)Formal (합니다)
Present
침묵해
cheem-moo-kae
chimmukae
침묵해요
cheem-moo-kae-yoh
chimmukaeyo
침묵합니다
cheem-moo-kahm-nee-dah
chimmukamnida
Past
침묵했어
cheem-moo-kae-ssuh
chimmukaesseo
침묵했어요
cheem-moo-kae-ssuh-yoh
chimmukaesseoyo
침묵했습니다
cheem-moo-kae-sseum-nee-dah
chimmukaesseumnida
Future
침묵할 거야
cheem-moo-kahl guh-yah
chimmukal geoya
침묵할 거예요
cheem-moo-kahl guh-yae-yoh
chimmukal geoyeyo
침묵할 겁니다
cheem-moo-kahl guhm-nee-dah
chimmukal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
침묵하세요
cheem-moo-kah-sae-yoh
chimmukaseyo
Suggestion / Let's Polite (요)
침묵해요
cheem-moo-kae-yoh
chimmukaeyo
Question Polite (요)
침묵해요?
cheem-moo-kae-yoh-?
chimmukaeyo?
Connective "and" — (고)
침묵하고
cheem-moo-kah-goh
chimmukago
Conditional "if" — (면)
침묵하면
cheem-moo-kah-myuhn
chimmukamyeon
Progressive (고 있어요)
침묵하고 있어요
cheem-moo-kah-goh ee-ssuh-yoh
chimmukago isseoyo
Want to (고 싶어요)
침묵하고 싶어요
cheem-moo-kah-goh shee-puh-yoh
chimmukago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
침묵할 수 있어요
cheem-moo-kahl soo ee-ssuh-yoh
chimmukal su isseoyo
Because / So (아/어서)
침묵해서
cheem-moo-kae-suh
chimmukaeseo
Noun form — (기)
침묵하기
cheem-moo-kah-gee
chimmukagi
Noun form — (음)
침묵함
cheem-moo-kahm
chimmukam