Verbseoul.
하다 verb
기약하다giyakhadato vow to meet

To say to vow to meet politely in the present tense, use 기약해요 (gee-yah-kae-yoh). Below is the full conjugation of 기약하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
기약해
gee-yah-kae
기약해요
gee-yah-kae-yoh
기약합니다
gee-yah-kahm-nee-dah
Past
기약했어
gee-yah-kae-ssuh
기약했어요
gee-yah-kae-ssuh-yoh
기약했습니다
gee-yah-kae-sseum-nee-dah
Future
기약할 거야
gee-yah-kahl- -guh-yah
기약할 거예요
gee-yah-kahl- -guh-yae-yoh
기약할 겁니다
gee-yah-kahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
기약하세요
gee-yah-kah-sae-yoh
Suggestion / Let's Polite (요)
기약해요
gee-yah-kae-yoh
Question Polite (요)
기약해요?
gee-yah-kae-yoh-?
Connective “and” — (고)
기약하고
gee-yah-kah-goh
Conditional “if” — (면)
기약하면
gee-yah-kah-myuhn
Noun form — (기)
기약함
gee-yah-kahm