1) Ardor 2) Brio 3) Eagerness 4) Elan 5) Energy 6) Enthusiasm 7) Joie de vivre 8) Pep 9) Pleasure 10) Relish 11) Spirit 12) Taste 13) Verve 14) Vigour 15) Vim 16) Zeal 17) Zest 18) Zestfulness 19) Zing 1) Elan 2) Enjoyment 3) Enjoyment or vigour 4) Enjoyment or zest 5) Enthusiasm 6) Enthusiasm plus 7) Enthusiasm to blow over 8) Enthusiastic appreciation 9) Fervor 10) Got sick with American relish 11) Great energy 12) Great enthusiasm 13) Great vigor 14) Heartiness 15) Hearty enjoyment 16) Hearty or keen enjoyment 
Latin, meaning: to taste. 
• (n.) Nice or keen appreciation or enjoyment; relish; taste; fancy.
Gus'to noun [ Italian or Spanish , from Latin gustus ; akin to English choose . Confer 2d GUST , GOUR .] Nice or keen appreciation or enjoyment; relish; taste; fancy. Dryden. 
Gusto is a cultivated variety of potato.
[n] - vigorous and enthusiastic enjoyment
Flavor (e.g ice cream); taste; pleasure.
relish 2 zest noun vigorous and enthusiastic enjoyment
taste, expression
hearty or keen enjoyment, as in eating or drinking, or in action or speech in general: to dance with gusto. · individual taste or liking.
to taste.
vigorous and enthusiastic enjoyment[Intelligent words] vigorous and enthusiastic enjoyment[Lexical terms] vigorous and enthusiastic enjoyment