# acted vs actin

> English confusable word pair

## The two words

### acted
*verb · IPA /ˈæk.tɪd/ · frequency rank #4,425*
simple past and past participle of act

### actin
*noun · IPA /ˈæktɪn/ · frequency rank #24,076*
A globular structural protein that polymerizes in a helical fashion to form an actin filament (or microfilament).

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