zest for life

: a piece of the peel of a citrus fruit (such as an orange or lemon) used as flavoring

: an enjoyably exciting quality : piquancy

: keen enjoyment : relish, gusto

: the quality that distinguishes a vital and functional being from a dead body

: a principle or force that is considered to underlie the distinctive quality of animate beings

: an organismic state characterized by capacity for metabolism (see metabolism 1), growth, reaction to stimuli, and reproduction

: of or relating to animate being

: lifelong

: using a living model