The Collaborative International Dictionary
Murmurer
Murmurer \Mur"mur*er\, n. One who murmurs.
Wiktionary
murmurer
n. One who murmurs
Usage examples of "murmurer".
These are the matters the murmurers and complainers talk of so impudently and contentiously, but the real cause lies deeper.
A myriad whispering voices hissed answers, simultaneous agonizing echoes murmuring, rustling, mumbling, as if numberless mutterers crowded forward, all speaking, each striving to be heard, murmurers fading in and out, many voices talking at the same time through the same mouth, each whisperer describing a different event, a confusion of sissing babble.