# optimal vs optional

> English confusable word pair

## The two words

### optimal
*adjective · IPA /ˈɒptɪməl/ · frequency rank #7,824*
The best, most favourable or desirable, especially under some restriction.

### optional
*adjective · IPA /ˈɒp.ʃə.nəl/ · frequency rank #8,180*
Not compulsory; left to personal choice; elective.

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