Language: Old English
Origin: fiftig, from fif 'five'


number, noun
1HMN the number 50

the fifties

[plural] also the '50s the 1950s the years between 1950 and 1959:
Standards of living rose in the fifties.
the early/mid/late fifties
The play was written in the late fifties.

be in your fifties

to be aged between 50 and 59
early/mid/late fifties
He must be in his early fifties by now.

in the fifties

if the temperature is in the fifties, it is between 50 degrees and 59 degrees
in the low/mid/high fifties
sunny, with temperatures in the mid fifties
5PEC [countable] a piece of paper money that is worth 50 dollars or 50 pounds:
I can give you five tens for that fifty if you want.
fiftieth adjective:
her fiftieth birthday

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