When it comes to describing something that lacks unity or coherence, the word "uncohesive" might come to mind. However, there are plenty of other synonyms that can be used in its place. For example, "disjointed," "fragmented," and "incoherent" all convey a similar sense of disconnectedness. "Scattered," "disorganized," and "haphazard" are useful words as well, particularly when talking about something that lacks structure or order. Meanwhile, "disunited," "divided," and "discordant" all suggest a lack of harmony or agreement. Ultimately, the word you choose will depend on the context and the specific nuances you wish to convey, but these synonyms offer a starting point for expressing the idea of uncohesiveness.