Bon viveurs is an expression used to describe a person who enjoys the finer things in life, including good food, wine, and social interactions. Some common synonyms for bon viveurs include epicure, connoisseur, gastronome, gourmand, and epicurean. An epicure is a person with refined taste, whereas a connoisseur is someone who is knowledgeable and well-versed in a particular field. A gastronome is a person who enjoys good food, and a gourmand is someone who eats and drinks excessively. Finally, an epicurean is someone who pursues pleasure, especially related to eating and drinking. These words can be used interchangeably with bon viveurs depending on the context and tone of the conversation.