# eighteen vs eighteenth

> English confusable word pair

## The two words

### eighteen
*num · IPA /ˈeɪ(t).tin/ · frequency rank #9,463*
The cardinal number occurring after seventeen and before nineteen, represented in Roman numerals as XVIII and in Arabic numerals as 18.

### eighteenth
*adjective · IPA /ˌeɪˈtiːnθ/ · frequency rank #15,392*
The ordinal form of the number eighteen.

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