* Formal: "The coffee aficionado carefully sniffed the beans before grinding them, discerning subtle notes of chocolate and caramel."
* Casual: "My dad is a true baseball aficionado, he knows the history of every team and every player."
* Descriptive: "The antique shop was a haven for furniture aficionados, with each piece a testament to craftsmanship and history."
* Humorous: "Despite being a self-proclaimed chocolate aficionado, I couldn't resist the allure of the giant ice cream sundae."
Let me know if you would like to see more examples, or if you have a particular context in mind!