The opposite of "more unsmoothed" is "smoother." When we say "unsmoothed," we are referring to something rough, bumpy, or uneven. So, when we use the word "smoother," we mean something that is even, flat, or leveled out. "Smooth" is a word that is often used to describe surfaces like skin, roads, and even thoughts. In a technical sense, the word "polished" could also be considered an antonym for "more unsmoothed," as both words refer to something that is either rough or refined. Regardless of which word you use, the opposite of "more unsmoothed" is something that is more refined or perfected.