# functionality

> English word · Noun · frequency rank #11,216

## Definitions
1. The ability to do a task, performance, or execution; a set of functions that something is able or equipped to perform.
2. In trademark law, the tendency of a product design to serve a function other than the identification of the product, preventing that design from being protected as a trademark.
3. The presence of a functional group.

## Etymology
From functional + -ity.

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

## Common misspellings (20)
`ffunctionality`, `fnuctionality`, `fucntionality`, `funcctionality`, `funcitonality`, `functinoality`, `functioanlity`, `functionailty`, `functionalitty`, `functionalityy`, `functionaliyt`, `functionallity`, `functionaltiy`, `functionlaity`, `functionnality`, `functoinality`, `functtionality`, `funnctionality`, `funtcionality`, `ufnctionality`

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