/ Thesaurus / M Synonyms of mid sixties Find synonyms for: Noun1. sixties, mid-sixties, time of lifeusage: the time of life between 60 and 70WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language