Verbseoul.
하다 verb

질투하다 conjugation (jiltuhada, to be jealous)

To say to be jealous politely in the present tense, use 질투해요 (cheel-too-hae-yoh) · jiltuhaeyo. Below is the full conjugation of 질투하다 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
질투해
cheel-too-hae
jiltuhae
질투해요
cheel-too-hae-yoh
jiltuhaeyo
질투합니다
cheel-too-hahm-nee-dah
jiltuhamnida
Past
질투했어
cheel-too-hae-ssuh
jiltuhaesseo
질투했어요
cheel-too-hae-ssuh-yoh
jiltuhaesseoyo
질투했습니다
cheel-too-hae-sseum-nee-dah
jiltuhaesseumnida
Future
질투할 거야
cheel-too-hahl guh-yah
jiltuhal geoya
질투할 거예요
cheel-too-hahl guh-yae-yoh
jiltuhal geoyeyo
질투할 겁니다
cheel-too-hahl guhm-nee-dah
jiltuhal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
질투하세요
cheel-too-hah-sae-yoh
jiltuhaseyo
Suggestion / Let's Polite (요)
질투해요
cheel-too-hae-yoh
jiltuhaeyo
Question Polite (요)
질투해요?
cheel-too-hae-yoh-?
jiltuhaeyo?
Connective "and" — (고)
질투하고
cheel-too-hah-goh
jiltuhago
Conditional "if" — (면)
질투하면
cheel-too-hah-myuhn
jiltuhamyeon
Progressive (고 있어요)
질투하고 있어요
cheel-too-hah-goh ee-ssuh-yoh
jiltuhago isseoyo
Want to (고 싶어요)
질투하고 싶어요
cheel-too-hah-goh shee-puh-yoh
jiltuhago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
질투할 수 있어요
cheel-too-hahl soo ee-ssuh-yoh
jiltuhal su isseoyo
Because / So (아/어서)
질투해서
cheel-too-hae-suh
jiltuhaeseo
Noun form — (기)
질투하기
cheel-too-hah-gee
jiltuhagi
Noun form — (음)
질투함
cheel-too-hahm
jiltuham