counteract

      English

      Etymology

      From counter- +‎ act.

      Pronunciation

      Verb

      counteract (third-person singular simple present counteracts, present participle counteracting, simple past and past participle counteracted)

      1. To act in opposition to; to hinder, defeat, or frustrate, by contrary agency or influence; as, to counteract the effect of medicines; to counteract good advice.

      Synonyms

      Derived terms

      Translations

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      Last modified on 14 December 2012, at 00:32