A gusto is an enthusiasm or energy that someone puts into doing something.
When people talk about someone doing something with gusto, they usually mean that person has a lot of passion and excitement for it. For example, if your friend starts cooking with lots of laughter and clinking pots, you might say "They're really cooking with gusto!" It means they're not just doing the task, but enjoying every minute of it.
Enthusiasm; enjoyment, vigor.
Example: He sang with more gusto than talent.
