Pearlescent is a term used to describe something that resembles the iridescent surface of a pearl. The opposite of pearlescent is something that is dull, non-reflective or opaque. Some antonyms for pearlescent include matte, cloudy, murky, murky, flat, lackluster, opaque, non-reflective or non-shiny. While pearlescent connotes a shiny, polished and smooth surface, antonyms for it are associated with a rough, dull and dusty texture. The use of antonyms in describing something is beneficial when trying to communicate more accurately, avoid repetition and evoke a different feeling or image.