# appendix

> English word · Noun · IPA /əˈpɛn.dɪks/ · frequency rank #14,692

## Definitions
1. Something attached to something else; an attachment or accompaniment.
2. A text added to the end of a book or an article, containing additional information.
3. The vermiform appendix.
4. Any process, prolongation, or projection.

## Etymology
Borrowed from Latin appendix.

## Easily confused with
- **append** (https://plainspell.com/en/vs/append-vs-appendix)

## Common misspellings (10)
`apendix`, `apepndix`, `appednix`, `appenddix`, `appendixx`, `appendxi`, `appenidx`, `appenndix`, `appnedix`, `papendix`

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