/ Thesaurus / P Synonyms of potassium bromide Find synonyms for: Noun1. potassium bromide, salt, restrainerusage: a white crystalline salt (KBr) used as a sedative and in photographyWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language