ninety

American  

[nahyn-tee] / ˈnaɪn ti /

noun

plural

nineties

1. a cardinal number, ten times nine.

2. a symbol for this number, as 90 or XC.

3. a set of this many persons or things.

4. nineties, the numbers, years, degrees, or the like, from 90 through 99, as in referring to numbered streets, indicating the years of a lifetime or of a century, or degrees of temperature.

   His grandmother is in her nineties.

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adjective

1. amounting to 90 in number.

ninety British  

/ ˈnaɪntɪ /

noun

1. the cardinal number that is the product of ten and nine See also number

2. a numeral, 90, XC, etc, representing this number

3. something represented by, representing, or consisting of 90 units

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determiner

1. 1. amounting to ninety

      ninety times out of a hundred

   2. ( as pronoun )

      at least ninety are thought to be missing

Usage

Spelling tips for 90 The word ninety (90) is hard to spell because it can be hard to remember whether to include the e from nine when combining it with the suffix -ty. How to spell ninety: To spell ninety, you simply combine the base number (nine) with the suffix -ty, which means "multiple of 10." 9 x 10 = 90 or, in writing, nine + -ty = ninety.

Etymology

Origin of ninety

before 1000; Middle English nineti, Old English nigontig. See nine, -ty ¹

Example Sentences

He leaves the car running—thankfully, because it’s ninety degrees outside— but flings his door open and runs around to the trunk.

From Literature

“Now I have only nine hundred and ninety to make,” Sadako said.

From Literature

And those improved recommendations come at a much lower cost, he said, sometimes ninety percent less than using the proprietary models favoured by US AI developers.

From BBC

But elderly people who buck this trend - and who hold on to their good bacteria well through their eighties and nineties - have been shown to live longer, healthier lives.

From BBC

Having come in during the first over, he strolled to the nineties but 29 balls passed with Bethell a hit away from a century.

From BBC