1. the practice of digging tunnels to intercept or destroy enemy mines
Usage: military; historical
2. action taken to counteract or thwart someone’s plans or schemes

1. to dig tunnels to intercept or destroy enemy mines
Usage: military; historical
2. to work against or thwart someone’s plans or schemes

Examples

• The fortress defenders began countermining when they detected enemy tunnels.
• Medieval siege warfare often involved mining and countermining operations.
• She suspected her rival was countermining her efforts to win the contract.
• The general ordered his engineers to start countermining immediately.
• Political countermining became common as the election approached.
• The company’s countermining strategy successfully blocked the hostile takeover.
• Ancient armies used countermining to protect their fortifications.