1. to greatly increase or strengthen something, especially efforts or actions
2. to double again or make twice as much

Examples

• The team decided to redouble their efforts after the disappointing loss.
• Security forces redoubled their patrols following the incident.
• She redoubled her focus on studying for the final exam.
• The company redoubled its investment in research and development.
• After the setback, he redoubled his determination to succeed.
• The government redoubled its commitment to fighting climate change.
• They redoubled the guard at the entrance for extra security.