The Collaborative International Dictionary of English v.0.48:
Enlivener \En*liv"en*er\, n. One who, or that which, enlivens, animates, or invigorates. [1913 Webster]WordNet (r) 3.0 (2006):
enlivener n 1: an agent that gives or restores life or vigor; "the soul is the quickener of the body" [syn: quickener, invigorator, enlivener]