/ Thesaurus / T Synonyms of thirties Find synonyms for: Noun1. thirties, mid-thirties, thirty-something, time of lifeusage: the time of life between 30 and 402. thirties, 1930s, decade, decennary, decenniumusage: the decade from 1930 to 1939Noun1. thirties, mid-thirties, thirty-something, time of lifeusage: the cardinal number that is the product of ten and threeWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: candor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language