jibber

/ˈdʒɪbər/
verb
  1. To talk rapidly, excitedly, or in a way that is hard to understand; to chatter or babble.
    • The two friends jibbered on the phone for hours about their weekend plans.
    • He tends to jibber when he gets nervous during presentations.
    • The toddler jibbered happily to herself while playing with her blocks.
noun
  1. Rapid, excited, or unintelligible talk; chatter or babble.
    • The room was full of excited jibber as the kids opened their presents.
    • Her jibber sounded like a foreign language to the new students.
    • I couldn't understand a word of his jibber over the loud music.