The crossword solution for the term TO SPICE is SEASON. To spice something up means to add flavor or excitement to it, and one way to do this is by using different seasonings. Seasonings are ingredients that are added to food to enhance its flavor, such as salt, pepper, herbs, and spices. By changing the seasonings used in a dish, the flavor can be altered significantly. Therefore, the term 'to spice' can be interpreted as adding seasonings to a dish to make it more flavorful.