The concept of "keep together" suggests unity and cohesion, so its antonyms would entail separation and disintegration. Words like disperse, scatter, divide, break up, and split up contrast with keep together. Disperse means to go in different directions, while scatter implies a lack of order or organization. Divide and break up imply creating boundaries or rifts between people or things, leading to separation. At the same time, split up refers to people or things going their own way, resulting in a loss of cohesion. Therefore, antonyms of "keep together" refer to situations that are undesirable for groups or individuals seeking unity and stability.