Tomentous is an adjective that means covered with dense short hairs, fuzzy, or matted. Some antonyms for tomentous are smooth, sleek, bald, clean, and hairless. These words describe surfaces or textures that are precisely the opposite of tomentous. For example, bald is the opposite of tomentous when describing a person's head, while sleek could describe a car with a polished and shiny finish. Clean also opposes tomentous, as it suggests a lack of dirt or hair on a surface. Therefore, when speaking about surfaces, smooth, sleek, bald, and clean are antonyms of tomentous.