gibber
verb [ I ] mainly disapproving uk/ˈdʒɪb.ər/ us/ˈdʒɪb.ɚ/
（通常因为害怕或头脑不清而）急促不清地说，语无伦次地说
to speak quickly in a way that cannot be understood, usually when you are very frightened or confused
Stop gibbering, man, and tell us what you saw. 别这么语无伦次的，老兄，告诉我们你看到什么了。