Most massed refers to things that are heaped up, crowded, or collected in large quantities. The antonyms for the word most massed are dispersed, scattered, separated, diluted, and sparsely. Dispersed refers to things that are spread out or transferred in different directions. Scattered is used to describe things that are randomly distributed or disjointed. Separated, on the other hand, means things that are kept apart or isolated from each other. Diluted, refers to things that have been added with water or a solvent to reduce its concentration. Finally, sparsely describes things that are thinly distributed or scarce in number.