Longman Dictionary of Contemporary English homepage

Language: Old English
Origin: sixtig, from six 'six'

sixty

number
     
Related topics: Numbers
six‧ty
1HMN the number 60:
sixty years ago
2

the sixties

[plural] also the '60s, the 1960sTMC the years from 1960 to 1969:
The book was written in the sixties.
the early/late sixties
the student riots in Paris in the late sixties
3

be in your sixties

to be aged between 60 and 69
early/mid/late sixties
I'd say she was in her late sixties.
4

in the sixties

if the temperature is in the sixties, it is between 60 degrees and 69 degrees
in the low/mid/high sixties
a fine spring day, with the temperatures in the low sixties
sixtieth adjective, pronoun:
her sixtieth birthday

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