counterblockade

noun

coun·​ter·​block·​ade ˌkau̇n-tər-blä-ˈkād 

variants or counter-blockade

plural counterblockades or counter-blockades

: an action undertaken to break through or subvert a blockade

The German counterblockade, by mine and submarine, was very costly to Britain, despite her naval strength.

—David Thomson

Word History

First Known Use

1846, in the meaning defined above