gibber
verb [intransitive, transitive]- (+ speech)
to speak quickly in a way that is difficult to understand, often because of fear （常因害怕而）急促不清地说，语无伦次地说 He cowered in the corner, gibbering with terror. 他蜷缩在角落里，吓得语无伦次。 By this time I was a gibbering wreck. 到这时我已是话也说不清的废人了。
Word Originearly 17th cent.: imitative.