Synonyms: invigoration, vivification, animation
Definition: the activity of giving vitality and vigour to something
Similar words: activating, activation, energizing
Definition: the activity of causing to have energy and be active
Synonyms: spiritedness, invigoration, animation, brio, vivification
Definition: quality of being active or spirited or alive and vigorous
Similar words: activeness, activity
Definition: the trait of being active; moving or acting rapidly and energetically
Usage: the level of activity declines with age