/ Thesaurus / N Synonyms of national insurance Find synonyms for: Noun1. national insurance, social insuranceusage: social insurance program in Britain; based on contributions from employers and employees; provides payments to unemployed and sick and retired people as well as medical servicesWordNet 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