Emulsive is a relatively uncommon word that means having a smooth or oily texture, or producing foam when shaken. It can be difficult to find synonyms for such an unusual term, but some possibilities might include lubricating, slick, or creamy. Other options could include silky, smooth, or rich. When describing a product, terms like foam-forming or emulsifying might be more appropriate. Ultimately, the best choice will depend on the context in which the word is being used and the desired connotations. However, with a little creativity, it's possible to come up with the perfect synonym for emulsive.