Gabble
Part of speech: verb
Definition: To talk fast, idly, foolishly, or without meaning.
Jabber
Part of speech: verb
Definition: To talk rapidly, indistinctly, or unintelligibly; to utter gibberish or nonsense.To utter rapidly or indistinctly; to gabble.
Part of speech: noun
Definition: Rapid or incoherent talk, with indistinct utterance; gibberish.