1. gives energy, strength, or vitality to someone or something
Usage: British spelling
2. supplies electrical power to a device or system
Usage: technical; British spelling

Examples

• A good night’s sleep energises me for the day ahead.
• The coach’s speech energises the team before every game.
• Fresh air and exercise energises both body and mind.
• The technician energises the circuit before testing begins.
• Coffee energises many people in the morning.
• The new project energises the entire department.
• Make sure to energise the system before running diagnostics.