Building wholes refer to creating something complete and unified. Antonyms for this word could be fragmentation, disintegration, or dissolution, which all suggest things falling apart or breaking apart into component parts. Alternatively, disunity, separation, and discord could be used as antonyms as they describe a sense of things being pulled apart or lacking cohesion. Other antonymic terms could include deconstruction, isolation, and segregation, which all suggest a sense of division or breaking down. In contrast to creating something whole, these antonyms suggest a sense of destruction or dismantling, rather than construction or creation.