Definition

A person who is part of a group and has special knowledge or access to confidential information about it.

Example

As an insider, she was able to provide valuable insights into the company's operations.

Conversation

I heard you got some inside information about the new café opening.

Yeah, I spoke to an insider who told me all about it.

That sounds exciting! What did they say about the menu?

They mentioned some unique dishes that I can't wait to try!

Synonyms & Antonyms

Root Explanation

Insider is formed from "in-" (meaning within) and "sider" (from the Old English "sidan", meaning side). The word refers to someone who is within a particular group or organization, having access to information or knowledge that is not available to outsiders.

Memory Tip

Think of someone who is 'within' ('in-') a group and knows its 'side' ('sider') — that's why an insider is someone who has special knowledge from being part of that group.

Visually Confused Words