vitality

[1]	verve , energy , life , life-force , vigour , power , intensity , force , vivacity , vivaciousness , animation , sparkle , spiritedness , exuberance , (Colloq) zing , pep , pizazz , oomph , get-up-and-go , zip , vim
[2]	stamina , energy , vim , hardiness , endurance , energy , strength , robustness
[3]	life force , vital force , elan vital
[4]	animation