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

Our party has gone through an era where their options were limited and restricted by insiders. — NBC news, 8 Nov. 2026

Lawmakers accused Peña of using his political influence to steer hundreds of millions of dollars in public funds into Ueno while regulators overlooked risky insider lending. — Arkansas Online, 7 Nov. 2026

Ask the performers to recreate events or scenes from life in the sect with guidance and input from the ex-insiders. — Georg Szalai, HollywoodReporter, 6 Nov. 2026

Some gaming insiders speculate that a wave of left-leaning progressives in power could work to limit gambling businesses. — Contessa Brewer, CNBC, 6 Nov. 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