The word "incommensuratenesses" itself is quite overwhelming, and finding antonyms for it can be equally challenging. However, by breaking it down, we can discover some antonyms. "Incommensurate" means not proportionate or unequal, so antonyms for this would be proportional, adequate, or equal. "Ness" is a suffix that indicates a quality or state, so antonyms for this would be without that quality or state. Therefore, some antonyms for "incommensuratenesses" could be proportionalities, adequacies, equality, or just simply commensurate. It is important to remember that antonyms provide us with opposites of a word, which can help us better understand and use language effectively.