Unhewn is an adjective that describes something that has not been shaped or worked on. Its antonyms include words like polished, refined, processed, crafted, honed, and shaped. These words are used to describe something that has been carefully worked on, refined, or perfected to achieve a certain standard. For example, a polished diamond is one that has been cut and shaped to perfection, making it sparkle and shine. Similarly, a crafted piece of furniture is one that has been carefully designed and made by skilled artisans. The use of antonyms like polished, refined, and crafted can help paint a more vivid picture of the characteristics of an object or situation.