gibber

/ˈdʒɪbər/
verb
  1. To speak rapidly and in a way that is difficult to understand, often because of fear or confusion.
    • The old man gibbered to himself on the park bench.
    • He gibbered nonsense after staying up all night studying.
    • The frightened witness gibbered when the police asked what happened.
noun
  1. Rapid, unintelligible speech; nonsense talk.
    • All I could hear from the next room was gibber and laughter.
    • His answer was just gibber — no one could follow it.
    • The recording was full of gibber and static.
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