1. to reject or void officially, especially a legal decision
Usage: legal
2. to suppress or put an end to forcibly

Examples

• The appeals court decided to quash the lower court’s ruling.
• The judge quashed the subpoena due to procedural errors.
• Police moved quickly to quash the riot before it spread.
• The government tried to quash rumors about the scandal.
• The motion to quash the indictment was denied.
• Military forces were sent to quash the rebellion.
• The company attempted to quash negative publicity about the product recall.