1) Delight in living 2) French word used in English 3) Gusto 
Joie de vivre (ʒwa də vivʁ, joy of living) is a French phrase often used in English to express a cheerful enjoyment of life; an exultation of spirit. Joie de vivre`can be a joy of conversation, joy of eating, joy of anything one might do… And joie de vivre may be seen as a joy of everything, a comprehensive joy, a philosophy of life, a Welta....
[n] - a keen enjoyment of living
joie de vivre 1. A keen enjoyment of living. 2. A hearty or carefree enjoyment of life.
noun a keen enjoyment of living
a delight in being alive; keen, carefree enjoyment of living.