Verbseoul.
하다 verb

키스하다 conjugation (kiseuhada, to kiss (to touch with the lips))

To say to kiss (to touch with the lips) politely in the present tense, use 키스해요 (kee-seu-hae-yoh) · kiseuhaeyo. Below is the full conjugation of 키스하다 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
키스해
kee-seu-hae
kiseuhae
키스해요
kee-seu-hae-yoh
kiseuhaeyo
키스합니다
kee-seu-hahm-nee-dah
kiseuhamnida
Past
키스했어
kee-seu-hae-ssuh
kiseuhaesseo
키스했어요
kee-seu-hae-ssuh-yoh
kiseuhaesseoyo
키스했습니다
kee-seu-hae-sseum-nee-dah
kiseuhaesseumnida
Future
키스할 거야
kee-seu-hahl guh-yah
kiseuhal geoya
키스할 거예요
kee-seu-hahl guh-yae-yoh
kiseuhal geoyeyo
키스할 겁니다
kee-seu-hahl guhm-nee-dah
kiseuhal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
키스하세요
kee-seu-hah-sae-yoh
kiseuhaseyo
Suggestion / Let's Polite (요)
키스해요
kee-seu-hae-yoh
kiseuhaeyo
Question Polite (요)
키스해요?
kee-seu-hae-yoh-?
kiseuhaeyo?
Connective "and" — (고)
키스하고
kee-seu-hah-goh
kiseuhago
Conditional "if" — (면)
키스하면
kee-seu-hah-myuhn
kiseuhamyeon
Progressive (고 있어요)
키스하고 있어요
kee-seu-hah-goh ee-ssuh-yoh
kiseuhago isseoyo
Want to (고 싶어요)
키스하고 싶어요
kee-seu-hah-goh shee-puh-yoh
kiseuhago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
키스할 수 있어요
kee-seu-hahl soo ee-ssuh-yoh
kiseuhal su isseoyo
Because / So (아/어서)
키스해서
kee-seu-hae-suh
kiseuhaeseo
Noun form — (기)
키스하기
kee-seu-hah-gee
kiseuhagi
Noun form — (음)
키스함
kee-seu-hahm
kiseuham