ninetiesnoun [ plural ]
uk/ˈnaɪn.tiz/us/ˈnaɪn.t̬iz/B2 A person's nineties are the period in which they are aged between 90 and 99:
She was well into her nineties when she died.
the nineties
the range of temperature between 90° and 99°:
Today it's supposed to get very hot - maybe up into the nineties.
B2 the decade (= period of ten years) between 90 and 99 in any century, usually 1990–1999:
Bill Clinton was the US president in/during the nineties.
Thesaurus: synonyms and related words
Describing age & birthdays
- a ripe old age idiom
- age group
- age limit
- aged
- be knocking (on) 60, 70, etc. idiom
- gone
- junior
- nonagenarian
- octogenarian
- old
- on the right/wrong side of 40, 50, etc. idiom
- put years on sb idiom
- senior
- spring chicken
- take years off sb idiom
- teens
- this side of sth idiom
- turn
- twenty-first
- when sb was a (mere) twinkle in their father's eye idiom
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You can also find related words, phrases, and synonyms in the topics:
Measurements of temperature
Decades, centuries & the millennium