Verbseoul.
regular
실종되다siljongdoedato go missing, to disappear

To say to go missing, to disappear politely in the present tense, use 실종돼요 (sheel-chohng-dwae-yoh). Below is the full conjugation of 실종되다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
실종돼
sheel-chohng-dwae
실종돼요
sheel-chohng-dwae-yoh
실종됩니다
sheel-chohng-dwaem-nee-dah
Past
실종됐어
sheel-chohng-dwae-ssuh
실종됐어요
sheel-chohng-dwae-ssuh-yoh
실종됐습니다
sheel-chohng-dwae-sseum-nee-dah
Future
실종될 거야
sheel-chohng-dwael- -guh-yah
실종될 거예요
sheel-chohng-dwael- -guh-yae-yoh
실종될 겁니다
sheel-chohng-dwael- -guhm-nee-dah

Other useful forms

Command Polite (세요)
실종되세요
sheel-chohng-dwae-sae-yoh
Suggestion / Let's Polite (요)
실종돼요
sheel-chohng-dwae-yoh
Question Polite (요)
실종돼요?
sheel-chohng-dwae-yoh-?
Connective “and” — (고)
실종되고
sheel-chohng-dwae-goh
Conditional “if” — (면)
실종되면
sheel-chohng-dwae-myuhn
Noun form — (기)
실종됨
sheel-chohng-dwaem