num
fifty
FIHF-tee
num
1
The number after forty-nine and before fifty-one; 50.
"The room was filled with fifty guests."
noun
1
A banknote or coin worth fifty units of currency.
"He paid for the meal with a crisp fifty."
How to Use Fifty
Learner’s notesIn plain EnglishThe number 50, or a fifty-unit banknote.
Common pairings
fifty-fifty
a fifty-dollar bill
Word Forms
fifties plural
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Etymology
From Old English fiftig, meaning literally "five tens."