vi a complaint half suppressed, or uttered in a low, muttering voice.
2. murmur ·vi a low, confused, and indistinct sound, like that of running water.
3. murmur ·vt to utter or give forth in low or indistinct words or sounds; as, to murmur tales.
4. murmur ·vi to make a low continued noise, like the hum of bees, a stream of water, distant waves, or the wind in a forest.
5. murmur ·vi to utter complaints in a low, half-articulated voice; to feel or express dissatisfaction or discontent; to grumble;
often with at or against.