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

Many horse racing insiders and analysts believe the San Felipe favorite Barnes(1/1) will become the favorite to win the Kentucky Derby. —Jay Ginsbach, Forbes, 1 Mar. 2025

As an insider for 2.5 years, Emerson knows Aspen well and could have made this offer at any time since May. —Kenneth Squire, CNBC, 1 Mar. 2025

When the Academy of Motion Picture Arts and Sciences hosted its inaugural awards in 1929, the event was a private gathering for industry insiders, solely focused on honoring the art of filmmaking rather than entertaining the public who consumed it. —James Mercadante, EW.com, 1 Mar. 2025

Chunky and boxy styles are making way for preppy cool, grungy loafers that have fashion insiders buzzing. —Rosie Marder, Travel + Leisure, 1 Mar. 2025

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