"Unbuilds" refers to the act of taking apart or demolishing a structure. Its antonyms would, therefore, indicate the act of building or constructing. Some synonyms for building could be "constructing," "erecting," or "developing." Conversely, antonyms for "unbuilds" could include "constructs," "creates," or "establishes." Other possible antonyms could be "assembles," "erects," "raises," "composes," "forms," or "found." When we think of antonyms for "unbuilds," we aim to find words that are the opposite of the destruction indicated by the original word. By doing so, we are presented with a wide variety of alternatives that represent the creative and constructive sides of the building process.