Susurration refers to a soft murmuring or whispering sound. If you're looking for synonyms for "most susurration," you may consider words like rustling, whispering, murmuring, or sighing. These words are perfect to use when describing gentle sounds or soft conversations that are not meant to be heard by others. You can also consider words like hushed, muted, or low-pitched to describe a sound that is barely audible. All of these synonyms are great options to use when looking for a way to describe the quiet or soft sounds that can sometimes be heard in a peaceful or calming environment.