/ Thesaurus / N Synonyms of nineties Find synonyms for: Noun1. nineties, 1890s, decade, decennary, decenniumusage: the decade from 1890 to 18992. nineties, 1990s, decade, decennary, decenniumusage: the decade from 1990 to 19993. nineties, mid-nineties, time of lifeusage: the time of life between 90 and 100Noun1. nineties, 1890s, decade, decennary, decenniumusage: the cardinal number that is the product of ten and nineWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: blithesome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language