gibber

The host, who was 18 when she joined the BBC kids' TV show, said she was "pushed to the limit" by behaviour that left her a "shaking, gibbering wreck."

Henry—imagining, perhaps, some trembling Kassandra gibbering prophecies to a chorus of policemen—was far more concerned about the psychic.

While I was a gibbering mess, Ellen was stunned into a weird, calm silence.

Won’t I look upon the smoldering ashes of that closet and wish that I’d organized it, or at least enjoyed it, rather than merely gibbering in it?

Another time, I had to rescue the late, great NME writer Steven Wells from the site, as he started gibbering like a hallucinating Vietnam war veteran.