# simplest vs simplex

> English confusable word pair

## The two words

### simplest
*adjective · IPA /ˈsɪm.pləst/ · frequency rank #12,141*
superlative form of simple: most simple

### simplex
*adjective · IPA /ˈsɪmplɛks/ · frequency rank #30,229*
Having a single structure; not composite or complex; undivided, unitary.

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