looking for a verb

[Offroad]

Please, dear teachers and friends,

I am looking for a verb that describes the act of talking too much and people who are trying to hear, don't understand a single word.

For example:

John has been speaking for hours, but nobody can understand nothing, he must see a phonoaudiologist doctor.

Thanks!

[BobK]

He speaks unclearly or indistinctly. He gabbles.

b

[susiedqq]

babbles

incoherent speaking

rambling

[Raymott]

Please, dear teachers and friends,

I am looking for a verb that describes the act of talking too much and people who are trying to hear, don't understand a single word.

For example:

John has been speaking for hours, but nobody can understand nothing, he must see a phonoaudiologist doctor.

Thanks!

"prattling on"