This is the 18707th most frequent Korean word.
신원을
"신원을" means "identity."
In this sentence, '신원을' refers to the identity of a person being verified.
경찰은 그의 신원을 확인하려고 했습니다.
The police tried to verify his identity.
Here, '신원을' refers to a person's identity that is being intentionally concealed.
그녀는 신원을 감추고 조용히 살고 있습니다.
She is hiding her identity and living quietly.
In this usage, '신원을' pertains to recognizing or learning the identity of the victim.