Levigate is a term that refers to the process of making a substance smooth and polished by rubbing or grinding it with a tool or abrasive. The antonyms for levigate would be roughen, coarsen, unpolished, unrefined, and bumpy. Levigate is often used in the context of preparing a surface for painting or other forms of decoration. However, if someone wanted to intentionally create a textured, rough or unfinished surface, they could use the antonyms of levigate instead. Other words that might be used in substitution for levigate are grind, sand, scrape, and abrade.