"Cerous" is an adjective that describes something that has the qualities of cerium, a silvery-white metal. Some synonyms for cerous include metallic, shiny, silvery, lustrous, and gleaming. Other options that can be used interchangeably with cerous are bright, polished, reflecting, and sparkling. These adjectives can be used to describe a variety of objects that have a similar luster to cerium, such as jewelry, automobiles, and appliances. Using synonyms for cerous can help writers avoid repetition and add descriptive variety to their writing.