The word "sparsities" refers to a condition of being rare or scarce. Its opposite, synonymous term would be abundance or excess. Conversely, some antonyms of "sparsities" include plenitude, fullness, profusion, richness, and luxuriance. These words denote a plentiful state or status of being bountiful. Alternatively, sparsities can also be without its antithetical attributes, like rarity and paucity. Therefore, antonyms for "sparsities" could be considerable, copious, or substantial. Regardless of the antonym, words that contrast with "sparsities" aid in conveying richer meaning and insight into the vocabulary's intended sense.