nine·ty | \ˈnīn-tē \
plural nineties

Definition of ninety 

1 : a number equal to nine times 10 — see Table of Numbers

2 nineties plural : the numbers 90 to 99 specifically : the years 90 to 99 in a lifetime or century She's in her nineties.

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Other Words from ninety

ninetieth \ˈnīn-tē-əth \ adjective or noun
ninety adjective
ninety pronoun, plural in construction

Examples of ninety in a Sentence

During the nineties, he was going to college and working part-time.

Recent Examples on the Web

So not only are these movies sticking, their lead actors are turning into bonafide superstars—much like what happened to rom-com queen Julia Roberts in the nineties. Christopher Rosa, Glamour, "Netflix Is Making the Rom-Com Cool Again," 10 July 2018 Temperatures during the race regularly hit the nineties and sometimes even inch their way into triple digits. Julie Brown, Outside Online, "The Best Running Socks, According to Ultramarathoners," 22 June 2018 People of a certain age might remember a distinctly late-nineties and early-aughts culinary fad: the fancy mac and cheese. Ben Huberman, Longreads, "Cheese and Macaroni Do Not a Mac and Cheese Make," 5 June 2018 Apart from an odd cameo with Crystal Palace in the 2011/12 season, Iversen has somewhat faded into obscurity since the nineties and early 2000's with both Spurs and Wolves., "PHOTO: Former Spurs Striker Steffen Iversen Looks Scarily Similar to TV Chef Gordon Ramsay," 4 Apr. 2018 The extreme doping that turned Tour de France cyclists into superhumans started in the early nineties. Marc Peruzzi, Outside Online, "Stop Boycotting Pro Cycling," 6 July 2018 The research also compares current rich-list indicators to the nineties, and times have certainly changed. Fox News, "Owning an Apple iPhone is the best way to prove you're rich - replacing mustard," 10 July 2018 Centenarians still have a much higher chance of dying than someone in their nineties. Laura Yan, Popular Mechanics, "How Long Can Humans Really Live?," 1 July 2018 The warning, which began at 11 a.m. Friday and was originally set to end 7 p.m. Saturday, has been extended an extra day as highs creep into the nineties. Tessa Weinberg,, "Heat warning extended until Sunday evening as scorching temperatures persist," 30 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ninety.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of ninety

before the 12th century, in the meaning defined at sense 1

History and Etymology for ninety

Middle English ninety, adjective, from Old English nigontig, short for hundnigontig, from hundnigontig, noun, group of 90, from hund-, literally, hundred + nigon nine + -tig group of 10; akin to Old English tīen ten

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Phrases Related to ninety

ninety/ninety-nine percent of the time

Statistics for ninety

Last Updated

17 Oct 2018

Look-up Popularity

Time Traveler for ninety

The first known use of ninety was before the 12th century

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More Definitions for ninety



English Language Learners Definition of ninety

: the number 90

nine*ties : the numbers ranging from 90 to 99

: a set of years ending in digits ranging from 90 to 99


nine·ty | \ˈnīn-tē \

Kids Definition of ninety

 (Entry 1 of 2)

: being nine times ten



Kids Definition of ninety (Entry 2 of 2)

: nine times ten : 90

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More from Merriam-Webster on ninety

Spanish Central: Translation of ninety

Nglish: Translation of ninety for Spanish Speakers

Britannica English: Translation of ninety for Arabic Speakers

Comments on ninety

What made you want to look up ninety? Please tell us where you read or heard it (including the quote, if possible).


exaggeratedly or childishly emotional

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