* Simple: The children greeted the ice cream truck with enthusiasm.
* Descriptive: Her enthusiasm for the project was contagious, inspiring everyone to work harder.
* Figurative: His enthusiasm was a flickering flame, easily extinguished by doubt.
* Formal: The professor's lecture was delivered with enthusiasm and clarity.
* Contrasting: Despite the challenges, they approached the task with unwavering enthusiasm.
Let me know if you'd like more examples or want to explore a specific context!