• (v. t.) To cause to become a fanatic.
Fa·nat'i·cize transitive verb [ imperfect & past participle Fanaticized ; present participle & verbal noun Fanaticizing .] To cause to become a fanatic. 
fanaticize, fanaticise (British) 1. To make fanatical. 2. To behave as a fanatic. 3. to act with or to show fanaticism.