# thirds vs thirty

> English confusable word pair

## The two words

### thirds
*noun · IPA /θɜːdz/ · frequency rank #8,218*
plural of third

### thirty
*num · IPA /ˈθɜːti/ · frequency rank #3,791*
The cardinal number occurring after twenty-nine and before thirty-one, represented in Arabic numerals as 30.

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