1. to give energy or enthusiasm to; to make someone feel more active or lively
Usage: British spelling; American spelling is 'energize'; commonly used in informal contexts
2. to supply with electrical power or energy
Usage: technical usage

Examples

• The coach's pep talk energised the team before the big game.
• A good night's sleep will energise you for tomorrow.
• The new project energised the entire department.
• Coffee energises me in the morning.
• The speaker's passion energised the audience.
• We need to energise the circuit before testing it.
• The campaign aims to energise young voters.