See gabble in Webster's New World Roget's A-Z Thesaurus II
verb
To talk rapidly, incoherently, or indistinctly:
babble, blather, chatter, gibber, jabber, prate, prattle. See words
noun
Unintelligible or foolish talk:
babble, blather, blatherskite, double talk, gibberish, jabber, jabberwocky, jargon, nonsense, prate, prattle, twaddle. See words
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