C2 noun #106,463 most common

insider

UK /ɪnˈsaɪdɚ/ | US /ɪnˈsaɪdɚ/

A person who has special knowledge about the inner workings of a group, organization, or institution.

insider in 30 Seconds

  • (noun) A person who has special knowledge about the inner workings of a group, organization, or institution.
  • (noun) A person who is within an enclosed space.

Meanings

  1. 1
    noun A person who has special knowledge about the inner workings of a group, organization, or institution.
  2. 2
    noun A person who is within an enclosed space.
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