New favorite word = susurration

"A susurrous breeze obscured other sounds outdoors.

Susurrous is a wonderful onomatopoeic adjective that means "having a whispering or rustling sound." Leaves, flowing water, and some fabrics are among the things that could be described as "susurrous." The noun forms are susurrus and susurration, and the verb is susurrate. A second adjective form, susurrant, seems inferior to susurrous since it lacks the final /s/." Taken from this link.