| Rating | Solver | Clue |
|---|---|---|
| COO | Murmuring sound | |
| BUM | To make murmuring or humming sound. | |
| DRONE | A humming or deep murmuring sound. | |
| HUMMING | Emitting a murmuring sound; droning; murmuring; buzzing. | |
| MOAN | A low mournful or murmuring sound; -- of things. | |
| PURR | The low murmuring sound made by a cat; pur. See Pur. | |
| PUR | To utter a low, murmuring, continued sound, as a cat does when pleased. | |
| SOUFFLE | A murmuring or blowing sound; as, the uterine souffle heard over the pregnant uterus. | |
| BUZZ | To make a low, continuous, humming or sibilant sound, like that made by bees with their wings. Hence: To utter a murmuring sound; to speak with a low, humming voice. | |
| PURL | To run swiftly round, as a small stream flowing among stones or other obstructions; to eddy; also, to make a murmuring sound, as water does in running over or through obstructions. | |