When it comes to antonyms for the word "loudnesses," there are several options available. In terms of volume or sound, there are words such as "quietness," "softness," "gentleness," or "muted" that can be used to describe a lack of loudness. Alternatively, if referring to a lack of intensity or flamboyance, antonyms could include words such as "subtlety," "restraint," "reserve," or "moderation." It's important to note that context can play a role in choosing the appropriate antonym, and that the most effective choice may depend on the specific sentence or situation in which the word is being used.