Definitions

1. noun

Extreme or unreasonable enthusiasm or zeal, especially for a particular cause or activity.

“Her fanaticism for environmental conservation led her to participate in protests and demonstrations.”

2. noun

The quality of being a fanatic.

“His fanaticism was evident in the way he argued with others who disagreed with him.”

3. noun

A strong and unreasonable attachment to something, especially an idea or opinion.

“The fanaticism of the revolutionary group was a major concern for the government.”

4. noun

Excessive or blind devotion, especially to a particular cause or idea.

“The fanaticism of the cult members was a subject of controversy in the media.”