/ Thesaurus / S Synonyms of sound law Find synonyms for: Noun1. sound law, law, natural lawusage: a law describing sound changes in the history of a languageWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: languid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language