Verbseoul.
하다 verb

의심하다 conjugation (uisimhada, to doubt)

To say to doubt politely in the present tense, use 의심해요 (ui-sheem-hae-yoh) · uisimhaeyo. Below is the full conjugation of 의심하다 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
의심해
ui-sheem-hae
uisimhae
의심해요
ui-sheem-hae-yoh
uisimhaeyo
의심합니다
ui-sheem-hahm-nee-dah
uisimhamnida
Past
의심했어
ui-sheem-hae-ssuh
uisimhaesseo
의심했어요
ui-sheem-hae-ssuh-yoh
uisimhaesseoyo
의심했습니다
ui-sheem-hae-sseum-nee-dah
uisimhaesseumnida
Future
의심할 거야
ui-sheem-hahl guh-yah
uisimhal geoya
의심할 거예요
ui-sheem-hahl guh-yae-yoh
uisimhal geoyeyo
의심할 겁니다
ui-sheem-hahl guhm-nee-dah
uisimhal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
의심하세요
ui-sheem-hah-sae-yoh
uisimhaseyo
Suggestion / Let's Polite (요)
의심해요
ui-sheem-hae-yoh
uisimhaeyo
Question Polite (요)
의심해요?
ui-sheem-hae-yoh-?
uisimhaeyo?
Connective "and" — (고)
의심하고
ui-sheem-hah-goh
uisimhago
Conditional "if" — (면)
의심하면
ui-sheem-hah-myuhn
uisimhamyeon
Progressive (고 있어요)
의심하고 있어요
ui-sheem-hah-goh ee-ssuh-yoh
uisimhago isseoyo
Want to (고 싶어요)
의심하고 싶어요
ui-sheem-hah-goh shee-puh-yoh
uisimhago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
의심할 수 있어요
ui-sheem-hahl soo ee-ssuh-yoh
uisimhal su isseoyo
Because / So (아/어서)
의심해서
ui-sheem-hae-suh
uisimhaeseo
Noun form — (기)
의심하기
ui-sheem-hah-gee
uisimhagi
Noun form — (음)
의심함
ui-sheem-hahm
uisimham