gibber

Outside the door all seemed quiet, but the moment she entered, each of the children assumed a pose of distraught misery, accompanied by moans and feverish gibbering.

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?