Neutral:
* The fanatic cheered wildly for their favorite team, even after they lost.
* He was a fanatic about his collection of vintage cars.
* The fanatic spent hours reading about the latest developments in quantum physics.
Negative:
* His fanatic devotion to the cause led him to commit acts of violence.
* The cult leader was a fanatic who demanded absolute obedience from his followers.
* The fanatic believed that the government was trying to control their minds.
Positive (less common):
* Her fanatic dedication to her craft led her to become a world-renowned artist.
* The fanatic support of the community helped the struggling business survive.
Note: The word "fanatic" can be considered a negative term, often implying extremism or obsessive behavior. Use it with caution and consider the context.