# flatten vs flattened

> English confusable word pair

## The two words

### flatten
*verb · IPA /ˈflæ.tən/ · frequency rank #29,657*
To make something flat or flatter.

### flattened
*adjective · frequency rank #18,080*
Made flat by something.

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