상실해요 · 상실했어요 · 상실할 거예요 · 상실한 (+noun)
to lose (something important), to be deprived of
Example
그는 사고로 기억을 일부 상실했어요.
He lost part of his memory in an accident.
Word parts
상 lose+실 lose
Two 'lose' syllables stacked — a serious, permanent loss.
Good to know
Used for abstract or serious losses like 기억, 자격, 의욕; for lost keys just say 잃어버리다.
Related words