* Positive: "The musician had a fanatical following, with fans dedicating their lives to his music." (implies extreme devotion)
* Neutral: "The fanatical attention to detail in her work was evident in every brushstroke." (implies intense focus and passion)
* Negative: "The cult leader instilled fanatical obedience in his followers, forbidding them to question his authority." (implies blind, extreme loyalty)
* Informal: "She's fanatical about recycling, sorting every item into the correct bin." (implies a strong interest bordering on obsession)
Remember: The tone of "fanatical" can change depending on the context. It can express positive devotion, extreme dedication, or even dangerous extremism.