counteract meaning and definition

COUNTERACT verb

Definition of counteract (verb)

1. act in opposition to
   • synonyms: antagonise, antagonize
2. oppose or check by a counteraction
   • synonyms: countercheck
3. oppose and mitigate the effects of by contrary actions
   • "This will counteract the foolish actions of my colleagues"
   • synonyms: counterbalance, countervail, neutralize
4. destroy property or hinder normal operations
   • "The Resistance sabotaged railroad operations during the war"
   • synonyms: countermine, sabotage, subvert, undermine, weaken