noun

insider

insider, member

An insider gave information to the press.

An insider gave information to the press.

a person within a group or organization An insider gave information to the press.

Synonyms: member, initiate; Antonyms: outsider

From 'inside' + the suffix '-er' which denotes a person. Someone who is on the inside.

An 'insider' is a person who is on the 'inside'.

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