The antonyms for the word "most come-apart" could be "sturdy," "durable," "solid," "intact," or "stable." These words denote strength and stability, unlike the phrase "most come-apart," which implies weakness and fragility. These antonyms are useful for describing objects, structures, or even people who are dependable, reliable, and resilient. For instance, you could describe a sturdy bridge that can withstand heavy traffic or a durable smartphone that can survive multiple drops. Alternatively, you could describe a stable team of coworkers who work well together and achieve their goals without falling apart under stress or pressure.