insider
/ˈɪnˌsaɪdər/
noun
- A person who is a member of a particular group, organization, or society and has special knowledge or influence not available to outsiders.
- The club's insiders decided the rules without asking new members.
- As an insider at the company, she knew about the merger before it was announced.
- He was considered an insider in the political party because of his close ties to the leaders.
Synonyms