susurrus n the indistinct sound of people whispering a soft susurrus of conversation Usage(s) A fresh susurrus of rumors about an impending peace settlement in Viet Nam welled up last week, but with somewhat more than the usual volume. A susurrus of Chinese rises from a history class. Seventh Grader Joel Montgomery coolly rapped out pastiche, prolegomenous, successfully spelled susurrus when Bobby shakily tiubbed it. Synonym(s) susurration