babble
noun
°Idle talk; senseless prattle; gabble; twaddle.
"This is mere moral babble." John Milton.
°Inarticulate speech, such as was used at the building the tower of Babel; constant or confused murmur.
"The babble of our young children. - Darwin."
verb
°To utter words indistinctly or unintelligibly; to utter inarticulate sounds; as, a child babbles.
°To talk incoherently; to utter unmeaning words.