Definitions:

1. (physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work noun
   • the units of energy are joules or ergs
2. a healthy capacity for vigorous activity noun
   • jogging works off my excess energy
3. an imaginative lively style, especially style of writing noun
   • The author's writing conveys great energy.
4. any source of usable power noun
   • the DOE is responsible for maintaining the energy policy
5. enterprising or ambitious drive noun
   • Europeans often laugh at American energy
6. forceful exertion noun
   • I play tennis with great energy.

Synonyms:

• free energy
• muscularity
• push
• vitality
• zip

NearBy Words:

• energy-absorbing
• energy-releasing
• energy-storing