Verbseoul.
하다 verb
기세하다gisehadato pass away

To say to pass away politely in the present tense, use 기세해요 (gee-sae-hae-yoh). Below is the full conjugation of 기세하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
기세해
gee-sae-hae
기세해요
gee-sae-hae-yoh
기세합니다
gee-sae-hahm-nee-dah
Past
기세했어
gee-sae-hae-ssuh
기세했어요
gee-sae-hae-ssuh-yoh
기세했습니다
gee-sae-hae-sseum-nee-dah
Future
기세할 거야
gee-sae-hahl- -guh-yah
기세할 거예요
gee-sae-hahl- -guh-yae-yoh
기세할 겁니다
gee-sae-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
기세하세요
gee-sae-hah-sae-yoh
Suggestion / Let's Polite (요)
기세해요
gee-sae-hae-yoh
Question Polite (요)
기세해요?
gee-sae-hae-yoh-?
Connective “and” — (고)
기세하고
gee-sae-hah-goh
Conditional “if” — (면)
기세하면
gee-sae-hah-myuhn
Noun form — (기)
기세함
gee-sae-hahm