1. Characterized by soft sounds
   "a slow sad susurrous rustle like the wind fingering the pines"
   - murmurous, rustling, soughing

See also: soft

• steam line
• steam locomotive
• steam organ
• steam pipe
• steam room
• steam shovel
• steam turbine
• steam whistle
• steam-heat
• steam-powered
• steamboat
• steamed
• steamed pudding
• steamer
• steamer clam
• steamfitter
• steaminess
• steaming
• steamroll
• steamroller
• sea scooter
• sea scorpion
• Sea Scout
• sea serpent
• sea shanty