jabbering
1. [ adjective ] talking idly or incoherently
Synonyms: babbling gabbling blithering blathering
Examples:

"blithering (or blathering) idiot" "jabbering children" "gabbling housewives" "a babbling hospital inmate"

Related terms: voluble
2. [ noun ] rapid and indistinct speech
Synonyms: gabble jabber
Related terms: gibberish chatter