fif·​ty | \ˈfif-tē \
plural fifties

Definition of fifty 

1 : a number equal to five times 10 — see Table of Numbers

2 fifties plural : the numbers 50 to 59 specifically : the years 50 to 59 in a lifetime or century

3 : a 50-dollar bill

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Other Words from fifty

fiftieth \ˈfif-​tē-​əth \ adjective or noun
fifty adjective
fifty pronoun, plural in construction
fiftyish \ˈfif-​tē-​ish \ adjective

Examples of fifty in a Sentence

She is in her fifties. The bill for dinner came to $43, and she gave him a fifty.

Recent Examples on the Web

Zammar, who is his mid-fifties, was apprehended in northern Syria and was being interrogated, a senior Kurdish commander told Agence France-Presse on Wednesday. Fox News, "Suspected 9/11 recruiter for Al Qaeda captured in Syria, Pentagon says," 19 Apr. 2018 Each of them had their first heart attack in their late fifties. Caroline Manzo, Woman's Day, "Caroline's Blog: Why I'm Staying Heart-Healthy For Life," 5 Feb. 2015 The next person to enter was a man in his fifties with thick glasses, one of the holdouts from the neighboring housing project. Ben Austen, The New Republic, "How one American city chose to tackle crime, combat racism, and reckon with the legacy of police brutality," 21 June 2018 Johann Gevers is a very tall, slender, charismatic man in his early fifties, with a high forehead, short orange hair whitening at the temples, and cloudy gray-blue eyes. Gideon Lewis-kraus, WIRED, "The Blockchain: A Love Story—And a Horror Story," 18 June 2018 Posthumous props When the painter Karen Baumeister died of cancer in 2015, in her early fifties, a career of great promise was cut short. Edith Newhall,, "Art to see now: Keith Smith at PMA and minimalists at Larry Becker," 13 June 2018 Research at the University of California, Berkeley, found that twenty-somethings report feeling lonely twice as often as people in their fifties and sixties, despite having large social networks. Radha Agrawal, Glamour, "Is Your Tribe Helping or Hurting Your Mental Health?," 1 June 2018 So the men, all in their fifties, sixties, and seventies, simply unload their cargo and begin hauling heavy sacks on foot more than a half mile to the launch point. Ivan Watson, Jungeun Kim, Stella Ko And Jo Shelley, CNN, "Messages in bottles sent across the sea to North Korea," 17 May 2018 The design blends with the desert landscape and uses a dignified western design motif adopted by downtown businesses in the fifties. azcentral, "Historic buildings in Scottsdale you need to see," 26 Apr. 2016

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'fifty.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of fifty

before the 12th century, in the meaning defined at sense 1

History and Etymology for fifty

Middle English, from fifty, adjective, from Old English fīftig, from fīftig, noun, group of 50, from fīf five + -tig group of ten; akin to tīen ten

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Statistics for fifty

Last Updated

25 Nov 2018

Look-up Popularity

Time Traveler for fifty

The first known use of fifty was before the 12th century

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More Definitions for fifty



English Language Learners Definition of fifty

: the number 50

fifties : the numbers ranging from 50 to 59

: a set of years ending in digits ranging from 50 to 59


fif·​ty | \ˈfif-tē \

Kids Definition of fifty

 (Entry 1 of 2)

: being five times ten



Kids Definition of fifty (Entry 2 of 2)

: five times ten : 50

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More from Merriam-Webster on fifty

Rhyming Dictionary: Words that rhyme with fifty

Spanish Central: Translation of fifty

Nglish: Translation of fifty for Spanish Speakers

Britannica English: Translation of fifty for Arabic Speakers Encyclopedia article about fifty

Comments on fifty

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a soft lustrous wool fabric with mohair

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