* Formal: "The art collector was a connoisseur of Renaissance paintings, able to identify forgeries with ease."
* Informal: "My grandmother is a connoisseur of fine chocolate, she can tell the difference between the best brands just by tasting."
* Humorous: "He claims to be a connoisseur of coffee, but he puts milk and sugar in it! I think he just enjoys the warm beverage."
* Descriptive: "The connoisseur carefully examined the vintage wine, swirling it in his glass and savoring its complex aromas."
As you can see, "connoisseur" can be used in a variety of ways, depending on the context. It is often used to describe someone who has a deep knowledge and appreciation for a particular subject or art form.