insider

[ in-sahy-der ]

/ ˌɪnˈsaɪ dər /

Save This Word!

See synonyms for: insider / insiders on Thesaurus.com

noun

a person who is a member of a group, organization, society, etc.

a person belonging to a limited circle of persons who understand the actual facts in a situation or share private knowledge: Insiders knew that the president would veto the bill.

a person who has some special advantage or influence.

a person in possession of corporate information not generally available to the public, as a director, an accountant, or other officer or employee of a corporation.

QUIZ

WILL YOU SAIL OR STUMBLE ON THESE GRAMMAR QUESTIONS?

Smoothly step over to these common grammar mistakes that trip many people up. Good luck!

Question 1 of 7

Fill in the blank: I can’t figure out _____ gave me this gift.

who

whom

TAKE THE QUIZ TO FIND OUT

Origin of insider

First recorded in 1820–30; inside + -er¹

Words nearby insider

inside lane, inside loop, inside of, inside out, Inside Passage, insider, insider dealing, insider trading, insides, inside straight, inside track

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use insider in a sentence

The core of GameStop's quick cash-in problem was the SEC's insider trading rules, which define a specific "trading window" schedule outlining when company insiders can and can't trade on quarterly earnings results that haven't yet been made public.
Why didn’t GameStop sell some of its inflated stock during the bubble?|Kyle Orland|February 11, 2021|Ars Technica
The inclusion of both films in that race were something of a surprise – especially the latter, given that Sia’s acclaimed cinematic debut is still mostly unseen by all but a few industry insiders.
Nominees (and 2 winners) for 2021 Golden Globes announced|Troy Masters|February 3, 2021|Washington Blade
A security team within JPMorgan Chase ran special ops to look for insider threats by monitoring the bank’s employees.
Local Law Enforcement Quiet on Relationships With ‘Predictive Policing’ Company|Jesse Marx|February 2, 2021|Voice of San Diego
All military personnel, including members of the National Guard, have undergone a background investigation, are subject to continuous evaluation and are enrolled in an insider threat program.
The Boogaloo Bois Have Guns, Criminal Records and Military Training. Now They Want to Overthrow the Government.|by A.C. Thompson, ProPublica, and Lila Hassan and Karim Hajj, FRONTLINE|February 1, 2021|ProPublica

At the time, three major city leases were about to expire, and Filner and other insiders had concluded the city needed a comprehensive real estate strategy.
How a Volunteer Helped Get the City Into Its Biggest Real Estate Debacle|Lisa Halverstadt|January 29, 2021|Voice of San Diego
The family behind Sotto Sotto says that they plan to rebuild, but an insider tells me it may be a while.
The Fiery Death of Sotto Sotto, Toronto’s Celebrity Hotspot|Shinan Govani|December 30, 2014|DAILY BEAST
A palace insider however insisted to the Daily Beast today that the Queen was not about to abdicate.
Could The Queen Abdicate on Christmas Day?|Tom Sykes|December 17, 2014|DAILY BEAST
A network insider insisted: “No expletives were uttered by Mr Mason in the recording of his rant.”
UK Reporter’s Anti-Banker Rant Goes Viral|Nico Hines|November 13, 2014|DAILY BEAST
But one former company insider says knockoff screws were mixed in with real ones.
Patients Screwed in Spine Surgery ‘Scam’|The Center for Investigative Reporting|November 3, 2014|DAILY BEAST
When I asked a tea-party insider recently which Senate races were most important to his movement, he named Sasse first.
Why You Can’t Tell the Truth About Race|Michael Tomasky|November 3, 2014|DAILY BEAST
If the insider keeps his eyes wide open and waits long enough his chance will come.
Stories of Our Naval Heroes|Various
Hereafter, for at least seven years, the Federation was an "insider" in the national government.
A History of Trade Unionism in the United States|Selig Perlman
A triangular opening faced towards the bows of the ship, so that the insider commanded a complete view forward.
Moby Dick; or The Whale|Herman Melville
But then, you know, the insider sometimes has a better chance than the outsider.
Stories of Our Naval Heroes|Various
The disputants know instinctively that an outsider can see the difficulty better than an insider.
The home|Charlotte Perkins Gilman

British Dictionary definitions for insider

insider

/ (ˌɪnˈsaɪdə) /

noun

a member of a specified group

a person with access to exclusive information

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

insider

Origin of insider

Words nearby insider

Words related to insider

How to use insider in a sentence

British Dictionary definitions for insider