Unguentous refers to something that is oily or greasy in texture. Some synonyms for this word include oily, fatty, greasy, slick, and oily. Other related terms that can be used in place of unguentous are slippery, slimy, oily, lubricated, or slick. Each of these words describes a substance that is lubricating or moisturizing in nature. They can be used to describe a variety of different products, including skincare products, massage oils, and lubricants. When writing about unguentous substances, it is important to use descriptive language that accurately describes their texture and consistency, while also conveying their benefits and uses.