MURMUROUS

murmurous, rustling, soughing, susurrous

(adjective) characterized by soft sounds; “a murmurous brook”; “a soughing wind in the pines”; “a slow sad susurrous rustle like the wind fingering the pines”- R.P.Warren

Source: WordNet® 3.1

Etymology

Adjective

murmurous (comparative more murmurous, superlative most murmurous)

Low, indistinct (of a sound); reminiscent of a murmur.

Source: Wiktionary

Mur"mur*ous, a. Etym: [Cf. L. murmuriosus, OF. murmuros.]

Definition: Attended with murmurs; exciting murmurs or complaint; murmuring. [Archaic or Poetic] The lime, a summer home of murmurous wings. Tennyson.

Source: Webster’s Unabridged Dictionary 1913 Edition