exultation comes to mind
Elan
The word enthusiasm means intense enjoyment or interest.
Pep
gusto
zeal
From an early age, he had a great enthusiasm for camping and exploring. The enthusiasm of the fans was obvious from the roar that filled the stadium.
Awesome is a word meaning great that starts with A.
exuberance excitement
Amazing
enthusiasm
The likely word is the adverb exuberantly (with great enthusiasm).
an expression of great or excessive emotion or enthusiasm