eighteen
Americannoun
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a cardinal number, ten plus eight.
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a symbol for this number, as 18 or XVIII.
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a set of this many persons or things.
adjective
noun
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the cardinal number that is the sum of ten and eight and the product of two and nine See also number
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a numeral, 18, XVIII, etc, representing this number
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the amount or quantity that is eight more than ten
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something represented by, representing, or consisting of 18 units
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(functioning as singular or plural) a team of 18 players in Australian Rules football
determiner
Etymology
Origin of eighteen
before 1000; Middle English ehtetene, Old English eahtatēne; cognate with Old Norse āttjān, German achtzehn. See eight, -teen
Vocabulary lists containing eighteen
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
It may seem to you that he’s only 18, but for him, he’s EIGHTEEN!
From Slate • May 30, 2018
But what would you have said at EIGHTEEN, is the question?
From Clarissa Harlowe; or the history of a young lady — Volume 2 by Richardson, Samuel
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
