Characterised by force or vigour; full of energy; lively, vigorous.
Possessing or pertaining to energy.
Any material utilized for its release of energy, either as an explosive, propellant, or for pyrotechnic effects.
A feeling of invigoration and restlessness associated with the arrival of the warm weather and renewal of nature in the spring season.
A feeling of laziness or listlessness associated with the arrival of the warm, comfortable weather of the spring season.