noun / verb
murmur
MUR-mer/mˈɝmɝ/
A soft low continuous or indistinct sound.
The murmur of conversation fills the room during dinner.

Etymology
Latin murmur covered humming, muttering, and rushing sounds and probably had a sound-imitating origin. English broadened its early meaning of grumbling complaint to low, continuous sounds more generally.
In context
murmur of a low conversation, cut short by the shutting of the door.
More examples
- A small stream murmurs beneath the bridge.
- She murmurs a few comforting words to the child.
- The doctor hears a heart murmur through her stethoscope.
Forms
murmur · murmurs · murmured · murmuring