/ Thesaurus / F Synonyms of fundamental law Find synonyms for: Noun1. fundamental law, organic law, constitution, lawusage: law determining the fundamental political principles of a governmentWordNet 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