in·​sid·​er | \(ˌ)in-ˈsī-dər, ˈin-ˌsī-\

Definition of insider 

: 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

Other participants in the round included existing investors, venture capital firm March Capital and Alphabet growth equity arm CapitalG. CrowdStrike is often put forward by industry insiders as a contender for an eventual initial public offering. Robert Hackett, Fortune, "Cybersecurity Firm CrowdStrike Raises $200 Million at $3 Billion Private Valuation," 19 June 2018 Interest in digital currency has ballooned in the last few years, with industry insiders encouraging Black consumers and women of all backgrounds to get in the game., "The Money Question You're Too Embarrassed To Ask: What Is Bitcoin?," 12 June 2018 And yet even the savviest industry insiders often have trouble thinking beyond the old clichés. Chioma Nnadi, Vogue, "This New Online Platform Is the Wikipedia of Young African Fashion Designers," 1 June 2018 Industry insiders know that eliminating the middleman through acquisitions by payers does not necessarily eliminate the pharmacy benefit manager business model. Kevin Schulman, STAT, "Mergers between health insurers and pharmacy benefit managers could be bad for your health," 1 June 2018 That the same handful of books tend to get bookstagrammed and repeatedly featured and discussed is not a coincidence, but ratherthe result of a small army of industry insiders working relentlessly to create buzz around these titles. Constance Grady, Vox, "How a book can become a hit before it’s even finished," 30 May 2018 And the insiders who are paying for the trip aren’t going just for the great Chinese food. John Kass,, "For Mayor Globe-trotter, it's the money that matters," 13 July 2018 Azar, after all, is the consummate insider who understands pricing and rebates all too well. Ed Silverman, STAT, "He can shame Pfizer and others, but Trump doesn’t have a practical way to lower drug prices," 9 July 2018 But in a curious sense, the wellspring of fear that makes Spygate plausible to frightened outsiders is a mirror image of the disgust that Brennan, the consummate insider, expresses about the president’s character. Mattathias Schwartz, New York Times, "A Spymaster Steps Out of the Shadows," 27 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'insider.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of insider

1848, in the meaning defined above

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Statistics for insider

Last Updated

10 Nov 2018

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Time Traveler for insider

The first known use of insider was in 1848

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More Definitions for insider



Financial Definition of insider

What It Is

An insider is an employee, director or any other person who is privy to confidential, nonpublic information about a company.

How It Works

Given their position, managers and executives within a company are privy to information about a company's operations that is not available to the investing public. The news and details of an upcoming merger or special dividend that have not yet been announced are two examples of insider information. Once information has been made public by the company, it is no longer considered "insider" information.

Why It Matters

Individuals with access to insider information have an unfair advantage in the market. Using this information to base a trade is an illegal practice known as "insider trading."

It is also illegal for a person with insider information to pass it to a third party so that they may use the information to profit.

Source: Investing Answers



English Language Learners Definition of insider

: a person who belongs to a group or organization and has special knowledge about it


in·​sid·​er | \in-ˈsī-dər \

Kids Definition of insider

: a member of a group or organization who has information about it

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Legal Definition of insider 

: 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

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Nglish: Translation of insider for Spanish Speakers

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