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
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.
“I was bound to work with the family until I was eighteen. But once Auntie Matchmaker found your ba for me, I told the tai-tai about the trouble with her husband. She let me go.”
From Literature
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The setup of Helen’s switchboard is identical to mine; I am not more than eighteen inches away from where I usually sit.
From Literature
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"And I am not a girl. I'm eighteen years old. I'm a woman."
From Literature
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She arranged her bag, checked her hair, put on lipstick that made her look about eighteen years old!
From Literature
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“This particular Butterfly was modeled after a real one caught by our commander in chief about eighteen years ago. He was one of the first members of Mayhem we ever caught.”
From Literature
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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.