insider

noun

in·​sid·​er (ˌ)in-ˈsī-dər 

ˈin-ˌsī-

: a person recognized or accepted as a member of a group, category, or organization: such as

a

: a person who is in a position of power or has access to confidential information

b

: a person (such as an officer or director) who is in a position to have special knowledge of the affairs of or to influence the decisions of a company

Examples of insider in a Sentence

Political insiders say that she is planning to run for president.

The book gives fans an insider's view of Hollywood.

Recent Examples on the Web

One major suitor, UTA, had bowed out of the bidding process as of early June, an insider says. — Erik Hayden, HollywoodReporter, 24 July 2026

Hollywood insider Rob Shuter has reported that the recent criticism Prince Harry levied at the court after losing his case against the publisher of the Daily Mail could have some consequences. — Lizzie Lanuza, StyleCaster, 23 July 2026

Reports from insider billbil-kun peg September 25, 2026, with Ultimate Edition owners and EA Play members getting up to eight days of early access ahead of the wide release. — Brian Mazique, Forbes.com, 23 July 2026

Democratic insiders will try to sketch out a schedule this week, and rival states are sniping at one another. — William J. Broad Nate Schweber Shane Goldmacher David Gelles, New York Times, 23 July 2026

Word History

First Known Use

1848, in the meaning defined above

Phrases Containing insider

• insider trading

Rhymes for insider

• collider
• confider
• divider
• outsider
• provider
• cider
• cyder
• eider
• glider
• hider
• rider
• schneider

Kids Definition

insider

noun

in·​sid·​er (ˈ)in-ˈsīd-ər 

: a person who is a member of a special group or organization

Legal Definition

insider

noun

in·​sid·​er

: a person who is in a position of power or has access to confidential information: as

a

: one (as an officer, director, employee, relative, or owner of more than 10% of the corporation's stock) who is in a position to have special knowledge of the affairs of or to influence the decisions of a company

b

: an individual (as a relative or an influential party) or entity (as a corporate affiliate) having a close relationship with a debtor such that transactions are not made at arm's length and are subject to closer scrutiny than the transactions of those dealing at arm's length