babble

To utter words indistinctly or unintelligibly; to utter inarticulate sounds

The men were babbling, so we couldn't make sense of anything.

To talk incoherently; to utter meaningless words.

To talk too much; to chatter; to prattle.

She babbled on for hours about the importance of some new gadget.

Radical rather than rhetorical, babble like an oracle

To make a continuous murmuring noise, like shallow water running over stones.

Hounds are said to babble, or to be babbling, when they are too noisy after having found a good scent.

In every babbling brook he finds a friend.

To utter in an indistinct or incoherent way; to repeat words or sounds in a childish way without understanding.

All this vvhile John had conn'd over ſuch a Catalogue of hard VVords, as vvere enough to conjure up the Devil; theſe he uſed to babble indifferently in all Companies, eſpecially at Coffee-houſes; ſo that his Neighbour Tradeſmen began to ſhun his Company as a Man that vvas crack'd.

Idle talk; senseless prattle

This is mere moral babble.

Inarticulate speech; constant or confused murmur.

[M]an has an instinctive tendency to speak, as we see in the babble of our young children; whilst no child has an instinctive tendency to brew, bake, or write.

A sound like that of water gently flowing around obstructions.

[T]he babble of the stream / Fell, and without the steady glare / Shrank the sick olive sere and small.