MURMUR — СИНОНІМІЯ
murmur a schwa that is incidental to the pronunciation of a consonant
WordNet
murmur a complaint uttered in a low and indistinct tone
murmur a low continuous indistinct sound; often accompanied by movement of the lips without the production of articulate speech
WordNet
murmur an abnormal sound of the heart; sometimes a sign of abnormal function of the heart valves
WordNet