Babbles

verb

1. To utter words indistinctly or unintelligibly; to utter inarticulate sounds

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

2. To talk incoherently; to utter meaningless words.
3. To talk too much; to chatter; to prattle.
4. 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."

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