This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. The cardinal number equal to 5 × 10.

n. A decade or the numbers from 50 to 59: They began playing golf in their fifties. With the sunshine, the temperature reached the fifties.

n. The decade from 50 to 59 in a century.

n. A fifty-dollar bill.

n. The cardinal number occurring after forty-nine and before fifty-one.

n. A fifty-dollar bill.

n. A fifty-pound note.

adj. Five times ten.

n. The sum of five tens; fifty units or objects.

n. A symbol representing fifty units, as 50, or l.

Five times ten; ten more than forty, or one more than forty-nine: a cardinal numeral.

n. The sum of five tens, or of forty-nine and one.

n. A symbol representing this number, as 50, L, or 1

adj. being ten more than forty

n. the cardinal number that is the product of ten and five

n. a United States bill worth 50 dollars

"Lord Durham wrote, over fifty [Errata: (from final page) for _fifty_ read _forty_.] years ago, of the French Canadians: 'They are a people without a history and a literature.'"

cardinal   

large integer    banknote    bill    government note    banker's bill    greenback    bank bill    federal reserve note    note   

fifty decisions    sixty    forty-nine    forty    fifty-one   

fiftieth   

Roman numerals    Arabic numerals   

nifty    shifty    thrifty   

twenty    thirty    eighty    seventy    sixty    '80s    five    '50s    ninety    ten