before the 12th century, in the meaning defined above
Middle English eightetene, adjective, from Old English eahtatīene, from eahta + -tīene; akin to Old English tīen ten
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“Eighteen.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/eighteen. Accessed 10 Apr. 2021.
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Nglish: Translation of eighteen for Spanish Speakers
Britannica English: Translation of eighteen for Arabic Speakers
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