1. attacked or destroyed with a torpedo (an underwater explosive weapon)
Usage: nautical; military
2. deliberately ruined or sabotaged something
Usage: informal

Examples

• The enemy submarine torpedoed three merchant ships during the war.
• The battleship was torpedoed and sank within minutes.
• His careless remarks torpedoed the peace negotiations.
• The scandal torpedoed her chances of winning the election.
• They torpedoed the proposal by spreading false information.
• The company’s stock price plummeted after competitors torpedoed their product launch.