insider

US /ɪnˈsaɪ.dɚ/
UK /ɪnˈsaɪ.dɚ/
"insider" picture
1.

내부자, 관계자

a person within a group or organization, especially someone who has special knowledge or access to information not available to outsiders

:
As an insider, she knew all the secrets of the company.
내부자로서 그녀는 회사의 모든 비밀을 알고 있었다.
The police suspect an insider helped the thieves.
경찰은 내부자가 도둑들을 도왔다고 의심한다.