C2 verb /ˈdʒɪb.ər/
gibber
parler de manière incompréhensible
Meaning
To speak rapidly and unintelligibly, typically through fear or shock.
Example
The frightened man began to gibber when he saw the ghost.
L'homme effrayé a commencé à parler de manière incompréhensible lorsqu'il a vu le fantôme.