서약해
suh-yah-kae
seoyakae
서약하다
To say to vow politely in the present tense, use 서약해요 (suh-yah-kae-yoh) · seoyakaeyo. Below is the full conjugation of 서약하다 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
| Tense | Casual (반말) | Polite (요) | Formal (합니다) |
|---|---|---|---|
| Present | 서약해요 suh-yah-kae-yoh seoyakaeyo | 서약합니다 suh-yah-kahm-nee-dah seoyakamnida | |
| Past | 서약했어 suh-yah-kae-ssuh seoyakaesseo | 서약했어요 suh-yah-kae-ssuh-yoh seoyakaesseoyo | 서약했습니다 suh-yah-kae-sseum-nee-dah seoyakaesseumnida |
| Future | 서약할 거야 suh-yah-kahl guh-yah seoyakal geoya | 서약할 거예요 suh-yah-kahl guh-yae-yoh seoyakal geoyeyo | 서약할 겁니다 suh-yah-kahl guhm-nee-dah seoyakal geomnida |
Other useful forms
Honorific / Command Polite (-(으)세요)
서약하세요
suh-yah-kah-sae-yoh
seoyakaseyo
Suggestion / Let's Polite (요)
서약해요
suh-yah-kae-yoh
seoyakaeyo
Question Polite (요)
서약해요?
suh-yah-kae-yoh-?
seoyakaeyo?
Connective "and" — (고)
서약하고
suh-yah-kah-goh
seoyakago
Conditional "if" — (면)
서약하면
suh-yah-kah-myuhn
seoyakamyeon
Progressive (고 있어요)
서약하고 있어요
suh-yah-kah-goh ee-ssuh-yoh
seoyakago isseoyo
Want to (고 싶어요)
서약하고 싶어요
suh-yah-kah-goh shee-puh-yoh
seoyakago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
서약할 수 있어요
suh-yah-kahl soo ee-ssuh-yoh
seoyakal su isseoyo
Because / So (아/어서)
서약해서
suh-yah-kae-suh
seoyakaeseo
Noun form — (기)
서약하기
suh-yah-kah-gee
seoyakagi
Noun form — (음)
서약함
suh-yah-kahm
seoyakam