- to act in opposition to; frustrate by contrary action.
Origin of counteract
SynonymsSee more synonyms on Thesaurus.com
neutralize, counterbalance, contravene, thwart.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for counteractant
What had Clay to offer as a counteractant, as an equal inspiration to the pride of this lusty nation?Children of the Market Place
Edgar Lee Masters
- (tr) to oppose, neutralize, or mitigate the effects of by contrary action; check
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for counteractant
Online Etymology Dictionary, © 2010 Douglas Harper