Pro-fusions refers to an abundance or excess of something. The antonyms for this word would be scarcity, dearth, or paucity. Therefore, if something lacks pro-fusions, it has a low level of quantity or amount. Another antonym for pro-fusions could be sparsity or rarity, which refers to something that is not found often or in large numbers. Conversely, austerity or frugality would also serve as antonyms for pro-fusions, as they represent a limited amount or a state of being without extravagance or abundance. Regardless of the antonym used, it conveys the opposite meaning of pro-fusions being less rather than more.