strike a blow for something - definition and synonyms

  1. 1
    to do something to help or to support an idea, movement, or group

    She has struck a blow for common sense and human decency.

  2. 2

    strike a blow at/against something

    to do something to harm or oppose an idea, movement, or group

    His main desire was to strike a blow against the communist forces.

See also main entry: strike