energy
Definitions
The strength and vitality required for sustained physical or mental activity.
The capacity of a physical system to perform work, such as moving an object or producing heat.
Power derived from the utilization of physical or chemical resources to provide light, heat, or machines.
Examples
The children were full of energy after their nap.
Solar panels are a great way to generate renewable energy.
It takes a lot of energy to run a marathon.
Synonyms
Antonyms
lethargy apathy weakness fatigue listlessness inertia idleness