# eighteen

> English word · Numeral · IPA /ˈeɪ(t).tin/ · frequency rank #9,463

## Definitions
1. The cardinal number occurring after seventeen and before nineteen, represented in Roman numerals as XVIII and in Arabic numerals as 18.

## Etymology
From Middle English eightetene, eiȝtene, ehtetene, from Old English eahtatīene, eahtatēne, from Proto-Germanic *ahtōutehun. Cognate with West Frisian achttjin, Dutch achttien, German achtzehn, Danish atten.
Equivalent to eight + -teen

## Easily confused with
- **eighties** (https://plainspell.com/en/vs/eighteen-vs-eighties)
- **eighteenth** (https://plainspell.com/en/vs/eighteen-vs-eighteenth)

## Common misspellings (11)
`egihteen`, `eigghteen`, `eigheten`, `eighhteen`, `eighteenn`, `eighten`, `eightene`, `eightteen`, `eigtheen`, `eihgteen`, `ieghteen`

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