# thirty-oneth

> English word · Adjective · IPA /ˌθɜːti ˈwʌnθ/

## Definitions
1. thirty-first

## Etymology
From thirty-one + -th (ordinal suffix).

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