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1. The cardinal number equal to 5 × 10.
2. fifties
a. A decade or the numbers from 50 to 59: They began playing golf in their fifties. With the sunshine, the temperature reached the fifties.
b. often Fifties The decade from 50 to 59 in a century.
3. A fifty-dollar bill.

[Middle English fifti, from Old English fīftig; see penkwe in Indo-European roots.]

fif′ty adj. & pron.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.fifties - the decade from 1950 to 1959fifties - the decade from 1950 to 1959  
decade, decennary, decennium - a period of 10 years
2.fifties - the time of life between 50 and 60fifties - the time of life between 50 and 60  
time of life - a period of time during which a person is normally in a particular life state
adulthood, maturity - the period of time in your life after your physical growth has stopped and you are fully developed
دَرْجَة الحَرارَه في الخَمسيناتفَتْرَة الخَمْسيناتفي سَنَوات الخَمسينات
padesát až šedesát stupňůpadesátá létapo padesátce
ötvenes évekötvenesek
milli fimmtíu og sextíu, sjötti tugursextugsaldursjötti áratugurinn
päťdesiate rokypo päťdesiatke
petdeseta leta
50-59 arası50-59 dereceelli yaşlarıelliliellili yıllar


(ˈfifti) noun
1. the number or figure 50.
2. the age of 50.
1. 50 in number.
2. aged 50.
ˈfifties noun plural
1. the period of time between one's fiftieth and sixtieth birthdays.
2. the range of temperatures between fifty and sixty degrees.
3. the period of time between the fiftieth and sixtieth years of a century.
ˈfiftieth noun
1. one of fifty equal parts.
2. (also adjective) (the) last of fifty (people, things etc); (the) next after the forty-ninth.
having fifty (of something). a fifty-page book.
ˈfifty-year-old noun
a person or animal that is fifty years old.
(of a person, animal or thing) that is fifty years old.
ˌfifty-ˈfifty adverb
half and half. We'll divide the money fifty-fifty.
equal. a fifty-fifty chance.
References in periodicals archive ?
The fifties were a tough decade for the left in America.
Still, the fact is that a radical American sub-culture did survive the big chill of the fifties to influence the young activists of the sixties.
In the late fifties, he began to drift slowly to the right, eventually harnessing his Marxist faith in the working class and his Trotskyite hatred of "bureaucratic collectivism' to the Cold War anticommunism of the AFL-CIO.