" murmurer "

[Verb]  | "murmur" 

1: to make a murmur

2: complain, grumble

3: to say in a murmur

Origin: 14th century ;

 Middle English murmuren "to hum (of bees), growl, grumble, complain," borrowed from Anglo-French & Latin; Anglo-French murmurer "to grumble, complain" (Old French also "to murmur" [of a brook]), borrowed from Latin murmurāre "to make a low, continuous sound, mutter, grumble, complain," of onomatopoeic origin;

  * Note : Alternatively the medieval French word could be descended from murmurāre if the onomatopoeic character of the word would override the regular vowel change of to ; this is the opinion of the Französisches etymologisches Wörterbuch.;

[Noun]  | "murmurer" 

[Verb]  | "murmur"