/ Thesaurus / R Synonyms of re act Find synonyms for: Verb1. react, respond, act, moveusage: show a response or a reaction to something2. react, oppose, act, moveusage: act against or in opposition to; "She reacts negatively to everything I say"3. react, change state, turnusage: undergo a chemical reaction; react with another substance under certain conditions; "The hydrogen and the oxygen react"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language