fifty
Americannoun
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fifties
plural
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a cardinal number, ten times five.
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a symbol for this number, as 50 or L.
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a set of this many persons or things.
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fifties, the numbers, years, degrees, or the like, from 50 through 59, as in referring to numbered streets, indicating the years of a lifetime or of a century, or degrees of temperature.
She lives in the East Fifties. He's in his late fifties. It's going to be in the fifties again today.
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Informal. a fifty-dollar bill.
He had a fifty and two tens in his wallet.
adjective
noun
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the cardinal number that is the product of ten and five
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a numeral, 50, L, etc, representing this number
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something represented by, representing, or consisting of 50 units
determiner
Other Word Forms
Noun Inflected Forms
Etymology
Origin of fifty
before 900; Middle English; Old English fīftig. See five, -ty 1
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.
See Examples For:
Abdullah Shafique: The only Pakistan batter to reach fifty or emerge with any crumb of credit after 61 in the first innings.
From BBC ● Aug. 21, 2026
To investigate this connection, the team studied a large multicenter group consisting of fifty patients and one hundred brain hemispheres.
From Science Daily ● Aug. 12, 2026
Around fifty miners have already taken part, and all of them have received job offers.
From Barron's ● Jul. 17, 2026
He blunders on Warren Buffett, stating that his company, Berkshire Hathaway, hasn’t made a garment “in over fifty years,” but the company only closed its textile operations 41 years ago.
From The Wall Street Journal ● Jul. 1, 2026
The trail came down one wall of the gully—a drop of fifty or so feet—then scooted across a frozen stream and up the other side.
From "Woodsong" by Gary Paulsen
The man was in his fifties when he was diagnosed with mild cognitive impairment caused by Alzheimer's disease.
From Science Daily ● Oct. 15, 2026
"I fled on my own, terrified, on one of my sons' motorcycles. We have nothing left," said the woman in her fifties from the Muthalath al-Udain area of Hodeida province.
From Barron's ● Sep. 9, 2026
Bethell, who also bowls part-time spin, could replace Lawrence, or regain his place from Jordan Cox, who has impressed with two fifties while filling in for Bethell at number three.
From BBC ● Aug. 29, 2026
Khaled Al-Badri, a Kuwaiti man in his fifties, told AFP he started turning off the air conditioning before leaving his house and switching off the outdoor lights.
From Barron's ● Jul. 21, 2026
By the time we crossed over into the valley of the seventies, Lefty was back in the fifties.
From "Middlesex: A Novel" by Jeffrey Eugenides
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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
