noun \ˈnīn-tē\

: the number 90

nine*ties : the numbers ranging from 90 to 99

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

plural nineties

Full Definition of NINETY

— see number table
plural :  the numbers 90 to 99; specifically :  the years 90 to 99 in a lifetime or century
nine·ti·eth \-tē-əth\ adjective or noun
ninety adjective
ninety pronoun, plural in construction

Examples of NINETY

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

Origin 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
First Known Use: before 12th century

Other Number-Related Terms

jubilee, myriad, quarantine, score, twain


Next Word in the Dictionary: ninety–day wonder
Previous Word in the Dictionary: nine–to–fiver
All Words Near: ninety

Seen & Heard

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

Get Our Free Apps
Voice Search, Favorites,
Word of the Day, and More
Join Us on FB & Twitter
Get the Word of the Day and More