'Murmurer' definitions:

Definition of 'murmurer'

From: WordNet
noun
A person who speaks softly and indistinctly [syn: mutterer, mumbler, murmurer]

Definition of 'Murmurer'

From: GCIDE
  • Murmurer \Mur"mur*er\, n. One who murmurs. [1913 Webster]