Definitions:

1. Fast, excited talk that makes little sense. NOUN
   • The girl jabbered incomprehensibly.
2. To speak or say something quickly in a way that is difficult to understand. VERB
   • The train was full of people jabbering into their cell phones.

Synonyms:

• Babble
• Blather
• chatter
• drivel
• gab
• gabble
• jibber-jabber

NearBy Words:

• jabberer
• jabbering
• jabberwocky