noun (physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work.
— synonyms: free_energy
noun forceful exertion.
— synonyms: vigor, vigour, zip
noun enterprising or ambitious drive.
— synonyms: push, get-up-and-go
noun an imaginative lively style (especially style of writing).
— synonyms: muscularity, vigor, vigour, vim
noun a healthy capacity for vigorous activity.
— synonyms: vim, vitality
noun any source of usable power.
noun the federal department responsible for maintaining a national energy policy of the United States.
— synonyms: Department_of_Energy, Energy_Department, DOE