Macis is an uncommon word that refers to a spice extracted from the outer covering of nutmeg seeds. There are several synonyms for macis that can be used interchangeably, such as mace, blade mace, or muscad. These synonyms refer to the same spice, and they are widely used in different parts of the world. Mace is commonly used in sweet and savory dishes, including baked goods, soups, and Indian curry. The blade mace and muscad are also used in a similar way and are commonly found in spice blends. So, if you are looking for a substitute for macis, you can easily use any of these synonyms without compromising the taste of your dish.