Definitions

1. verb

to make or declare someone a fanatic, or to behave in an excessively enthusiastic or obsessive manner

“The politician’s passionate supporters began to fanaticise about the upcoming election.”

2. verb

to make something a subject of enthusiastic or obsessive devotion, or to convert someone to a particular cause or interest

“The charismatic leader fanaticised her audience with a powerful speech.”

3. noun

the act of making or declaring someone a fanatic, or the state of being excessively enthusiastic or obsessive

“The fanaticise of the crowd was a sight to behold.”