Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary




Synonyms and Antonyms of counteract

  1. to balance with an equal force so as to make ineffective <this medication will counteract the symptoms but it won't kill the infection> Synonyms annul, cancel (out), compensate (for), correct, offset, counterbalance, counterpoise, make up (for), negative, neutralizeRelated Words invalidate, negate, neuter, nullify; atone (for); outbalance, outweigh, redeem; redress, relieve, remedy; override, overrule

Learn More about counteract

Seen and Heard

What made you want to look up counteract? Please tell us where you read or heard it (including the quote, if possible).