nine·​ty | \ ˈnīn-tē How to pronounce ninety (audio) \
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.

Keep scrolling for more

Other Words from ninety

ninetieth \ ˈnīn-​tē-​əth How to pronounce ninetieth (audio) \ 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

In the golden age of the romantic comedy—from the nineties to the early two-thousands—these experiences could not be found onscreen. Jiayang Fan, The New Yorker, "What “Always Be My Maybe” Gets About Making an Asian-American Rom-Com," 4 June 2019 There was a nineties renovation in the kitchen, but the majority of the house had all the original moldings, so just going back and restoring that. Joanna Saltz, House Beautiful, "Five Designers on How to Make Old Things New Again," 8 Feb. 2019 There were one or two little ones in the early nineties, like a really bad horror film about serial killers in 1991 that wanted to be a blockbuster. Julia Felsenthal, Vogue, "Sandi Tan’s Shirkers May Be the Year’s Most Compelling Grifter Story," 15 Oct. 2018 If memory serves, the late-nineties price was $8 per foot. Ben Hewitt, Popular Mechanics, "The Joy and Agony of Drilling Your Own Well," 31 Jan. 2017 Her friends were supportive, too: High school buddy Brian Atwood, now a successful shoe designer, convinced McCarthy, who had impatiently dropped out of college, to move to Manhattan in the early nineties. David A. Keeps, Good Housekeeping, "Funny Girl: Exclusive Interview with Melissa McCarthy," 6 Nov. 2012 The silhouettes evolved over the years, from formfitting dresses in the sixties to eccentric caftans in the nineties, but her joyful, luxurious approach to dressing remained, emphasizing Franklin's star power. Halie Lesavage, Glamour, "Remembering Aretha Franklin: A Look Back at Her Most Iconic Fashion Moments," 16 Aug. 2018 News broke on Thursday, October 25, that a remake of the seminal nineties movie Clueless is currently in development. Abby Gardner, Glamour, "A Clueless Remake Is Officially in the Works—and People Have Thoughts," 26 Oct. 2018 But The Girl—overall very nineties low-key, clubby music. Kerry Pieri, Harper's BAZAAR, "Derek Lam's Holiday Entertaining Musts," 8 Dec. 2014

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.

See More

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

Keep scrolling for more

Learn More about ninety

Statistics for ninety

Last Updated

13 Jun 2019

Look-up Popularity

Time Traveler for ninety

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

See more words from the same century

Keep scrolling for more

More Definitions for ninety



English Language Learners Definition of ninety

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


nine·​ty | \ ˈnīn-tē How to pronounce ninety (audio) \

Kids Definition of ninety

 (Entry 1 of 2)

: being nine times ten



Kids Definition of ninety (Entry 2 of 2)

: nine times ten : 90

Keep scrolling for more

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).


showing courage and determination

Get Word of the Day daily email!

Test Your Vocabulary

Words for Summer: A Quiz

  • a closeup of a sunflower
  • Which of the following words means “of or relating to summer”?
Spell It

Can you spell these 10 commonly misspelled words?

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!