American Dictionary

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Definition nineties in American English

nineties noun

[plural] noun
/ˈnaɪntiz/
1

the years from 1990 to 1999

Example

people who were born in the nineties

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2

a temperature in the nineties is between 90 and 99 degrees Fahrenheit

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3

aged between 90 and 99

Example

She is in her nineties, but very fit.

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Definition nineties in American English