Deadenings are the things that make an environment less lively or noisy. There are many different synonyms for this word, including mufflings, dullings, mutings, suppressions, and quietenings. Each of these synonyms has a slightly different connotation. Mufflings, for example, implies a softening or mellowing of sound, while dullings suggests a reduction in intensity. Mutings implies a complete elimination of sound, while suppressions suggests an intentional effort to lessen or stifle sound. Quietenings suggests a calming or pacifying effect, which may be desirable in certain situations. Whatever the context, there are many different ways to describe the reduction of noise or liveliness in a given environment.