The antonyms for the word "sub-dividing" are uniting, consolidating, and merging. When a group of people, properties or ideas unite, they come together to form a single entity. Consolidating means to bring parts or elements together into a whole. In contrast to sub-dividing, merging involves the combination of two or more things to form a new entity. While sub-dividing emphasizes the breaking down of something into smaller parts, the three antonyms emphasize the opposite - combining parts to form a larger entity. The antonyms are useful when dealing with activities that require cohesion and harmony, such as business mergers, team building, and community projects.