# thirdly vs thirty

> English confusable word pair

## The two words

### thirdly
*adverb · IPA /ˈθɜːdli/ · frequency rank #26,995*
In the third place; third in a row.

### 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/thirdly-vs-thirty