quash

/kwɒʃ/
verb
  1. To officially reject or cancel something, especially a legal decision or order.
    • The company's appeal was quashed by the higher court.
    • The judge decided to quash the previous ruling.
    • The city council voted to quash the new parking regulation.
  2. To stop something forcefully, such as a rebellion, rumor, or protest.
    • The principal quickly quashed the false rumors about the school closing.
    • She tried to quash her doubts and focus on the task.
    • Security forces were called in to quash the uprising.