/ Thesaurus / S Synonyms of social security Find synonyms for: Noun1. Social Security, social insuranceusage: social welfare program in the U.S.; includes old-age and survivors insurance and some unemployment insurance and old-age assistanceWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language