# unsuccessful vs unsuccessfully

> English confusable word pair

## The two words

### unsuccessful
*adjective · IPA /ˌʌnsəkˈsɛsfl̩/ · frequency rank #10,789*
Failed, not successful.

### unsuccessfully
*adverb · IPA /ˌʌnsəkˈsɛsfəli/ · frequency rank #20,257*
Not successfully; without success; to no avail.

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