entusiasmo

noun
  1. A feeling of intense excitement and eagerness. noun
    Her entusiasmo for the project was contagious, inspiring everyone on the team.
    He spoke with such entusiasmo that the audience was captivated by his vision.
  2. A strong interest or passion for something. noun
    His entusiasmo for classical music led him to learn several instruments.
    The teacher's entusiasmo for science made the subject fascinating for her students.