# inside vs insider

> English confusable word pair

## The two words

### inside
*noun · IPA /ˈɪnsaɪd/ · frequency rank #657*
The interior or inner part.

### insider
*noun · IPA /ɪnˈsaɪdɚ/ · frequency rank #10,066*
A person who has special knowledge about the inner workings of a group, organization, or institution.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/vs/inside-vs-insider