great energy and enthusiasm
verve - energy
If somebody or something has 'verve', then it is imbued with a lively and forceful spirit as well as a certain degree of dynamism. Such people or things bring excitement and a favourable and beneficial energy that has the power to influence and inspire. For that reason, the term is always used in a positive context.
The speaker delivered her speech with verve and vigour. It meant that the audience was totally engaged from the start.
Sarah took to her task with spirit and verve which set a great example to those she was working with on the project.
The movie started at an exciting and frenetic pace, but, disappointingly, it had lost all of its earlier verve by the end.