The capacity for vigorous activity; the physical or mental strength that enables one to perform work or engage in activity. noun
She has a lot of energy and is always ready to participate in sports.
After a good night's sleep, he felt full of energy and ready to start the day.
The power derived from the utilization of physical or chemical resources, especially to provide light, heat, or motion. noun
Solar energy is harnessed to generate electricity.
The car runs on energy stored in its battery.
A person's mental vitality or enthusiasm. noun
Her speech was full of energy and passion.
The team played with great energy and determination.
A source of usable power or force, often in a scientific or technical context. noun
Nuclear energy is a controversial but powerful source of electricity.
The machine converts chemical energy into mechanical energy.