Pep
gusto
zeal
exuberance excitement
enthusiasm
The boy was jumping up and down in enthusiasm about the new toys he got on Christmas. Your enthusiasm is contagious. The student felt little enthusiasm when faced with a weekend of studying a subject he did not care for.
exultation comes to mind
"Utsaah" is the Hindi word for enthusiasm. "उत्साह"
One seven letter word, One two letter word and a five letter word, One three letter word and a four letter word, One three letter word and two two letter words, Two three letter words, Three two letter words, A two letter word and a four letter word, A six letter word, A two letter word and a three letter word, A five letter word, Two two letter words, A four letter word, A three letter word, or A two letter word.
empiricism enthusiasm epithelium evangelism
Elan
Enthusiasm is a noun.
I've is a three letter word. I'll is another three letter word.