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1. Supplying motive force
   - energizing, kinetic

1. The activity of causing to have energy and be active
   - energizing, activating, activation

1. Raise to a higher energy level
   - excite, energize
    
2. Cause to be alert and energetic
   - stimulate, arouse, brace, energize, perk up

See also: dynamic, dynamical, energiser [Brit]

Type of: activity, affect, alter, change, modify

Antonym: de-energise [Brit]