If you say that someone is gibbering, you mean that they are talking very fast and in a confused manner.
例句
Everyone is gibbering insanely, nerves frayed as showtime approaches...随着开演时间逼近,大家都紧张起来,慌里慌张地念着台词。I was a gibbering wreck by this stage.我到这时候说话已颠三倒四,神经高度紧张。
英英词典释义
Noun
1. unintelligible talking
Verb
1. speak (about unimportant matters) rapidly and incessantly