verb coun·ter·vail \ˌkau̇n-tər-ˈvāl\

Definition of countervail

  1. transitive verb
  2. 1 :  to compensate for

  3. 2 archaic :  equal, match

  4. 3 :  to exert force against :  counteract

  5. intransitive verb
  6. :  to exert force against an opposing and often bad or harmful force or influence

Origin and Etymology of countervail

Middle English countrevailen, from Anglo-French cuntrevaloir, from cuntre- counter- + valoir to be worth, from Latin valēre — more at wield

First Known Use: 14th century

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