# unsuccessful

> English word · Adjective · IPA /ˌʌnsəkˈsɛsfl̩/ · frequency rank #10,789

## Definitions
1. Failed, not successful.

## Etymology
From un- + successful.

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

## Common misspellings (15)
`nusuccessful`, `unnsuccessful`, `unscucessful`, `unssuccessful`, `unsuccesfsul`, `unsuccesful`, `unsuccessfful`, `unsuccessflu`, `unsuccessfull`, `unsuccessufl`, `unsuccsesful`, `unsucecssful`, `unsucessful`, `unusccessful`, `usnuccessful`

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