Fontina is a type of semi-hard, Italian cheese that has a creamy, nutty flavor and a slightly pungent aroma. While fontina cheese is a popular ingredient in many recipes, there are several synonyms for it that can be used as substitutes. One common synonym for fontina is Gruyere cheese, which is a type of Swiss cheese that has a similar texture and flavor. Another option is Emmental cheese, which is a mild, nutty cheese that is often used in fondues. Other possible substitutions for fontina cheese include Asiago, Provolone, and even some types of cheddar cheese, depending on the recipe. Ultimately, the best substitute for fontina cheese will depend on your personal taste preferences, as well as the flavor profile of the dish you are making.