The antonyms for the word "more disintegrative" would be terms that imply stability or cohesion. Some possible antonyms include words like cohesive, integrated, whole, undivided, united, and consolidated. These antonyms suggest a sense of harmony or unity, as opposed to a state of fragmentation or disintegration. Other possible antonyms might include words like constructive, productive, or additive, which imply the creation or building up of something, in contrast to the tearing down or disintegration of existing structures. Ultimately, the choice of antonyms depends on the context and the intended meaning of the original term.