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

For example, cybersecurity company Darktrace uses AI to detect unusual behavior indicative of cyber threats, helping to prevent insider attacks. —Danyal Ali, Forbes, 6 Sep. 2024

Owner Dave Stein shares insider intel on everything from the best spots for breakfast (Cafe Mambo) to the best beach for sunset (Baldwin). —Jen Murphy, Travel + Leisure, 5 Sep. 2024

So many style insiders have been wearing the wild pattern for Fashion Month, especially in jeans form. —Jake Henry Smith, Glamour, 5 Sep. 2024

Prepare for a chic and informative night, hosted by model, actress, and TV personality Eva Marcille and fashion insiders alike get ready for the following experiences. —Kerane Marcellus, Essence, 5 Sep. 2024

Word History

First Known Use

1848, in the meaning defined above

Phrases Containing insider

• insider trading

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