Webster's Revised Unabridged Dictionary · 1913

Remurmur

Remurmur (r?-m?r"m?r) , verb, transitive and intransitive

[Prefix re- + murmur: compare French remurmurare.]

To murmur again; to utter back, or reply, in murmurs.
The trembling trees, in every plain and wood, Her fate remurmur to the silver flood. — Pope