1. (n.) The act of vivifying, or the state of being vivified; restoration of life; revival.

2. (n.) One of the changes of assimilation, in which proteid matter which has been transformed, and made a part of the tissue or tissue cells, is endowed with life, and thus enabled to manifest the phenomena of irritability, contractility, etc.

3. (n.) The act or process of vivificating.

activity actuation afflatus aggravation agitation alacrity animal spirits animate existence animating spirit animus anxiety anxiousness appetite ardency ardor arousal arousing avidity avidness being alive birth breathless impatience breeziness brio briskness bubbliness capersomeness cheerful readiness coltishness dash direction divine afflatus dynamism eagerness ebullience effervescence elan electrification energizing energy enlivening enlivenment enthusiasm esprit exacerbation exasperation excitation excitement exhilaration existence exuberance fervor fire firing fomentation forwardness friskiness frolicsomeness gaiety galvanization gamesomeness gayness genius glow gust gusto having life heartiness immortality impatience impetuosity impetus incitement infection inflammation influence infuriation infusion inner-direction inspiration intensity invigoration irritation joie de vivre keen desire keenness lathering up life lifetime liveliness living long life longevity lustiness mettle motivation moving moving spirit moxie oomph other-direction pep peppiness perkiness pertness perturbation piss and vinegar pizzazz playfulness prompting promptness provocation quickening quickness readiness revitalization revival robustness rollicksomeness rompishness skittishness spirit spiritedness spirits sportiveness sprightliness spriteliness steaming up stimulation stimulus stirring stirring up verve viability vigor vim vitality vitalization vivaciousness vivacity vivification warmth whipping up working up zest zestfulness zing zip