ninety

noun nine·ty \ ˈnīn-tē \

Definition of ninety

plural nineties
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.

ninetieth

play \ˈnīn-tē-əth\ adjective or noun

ninety

adjective

ninety

pronoun, plural in construction

Examples of ninety in a Sentence

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

Recent Examples of ninety from the Web

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.

Origin and Etymology of 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

Other Number-Related Terms



NINETY Defined for English Language Learners

ninety

noun

Definition of ninety for English Language Learners

  • : the number 90

  • nine*ties : the numbers ranging from 90 to 99

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


NINETY Defined for Kids

1

ninety

adjective nine·ty \ ˈnīn-tē \

Definition of ninety for Students

:being nine times ten

2

ninety

noun

Definition of ninety for Students

:nine times ten :90

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