# flex vs fly

> English confusable word pair

## The two words

### flex
*noun · IPA /flɛks/ · frequency rank #10,696*
Flexibility, pliancy.

### fly
*noun · IPA /flaɪ/ · frequency rank #1,827*
Any insect of the order Diptera; characterized by having two wings (except for some wingless species), also called true flies.

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