What is "jibbering"

Usage examples of "jibbering".

Christian nation with their catcalling and their jibbering like an Islamic sect from out of the motion pictures.

Wikkell could see how it might have been so: this Deek was a pleasant enough sort, much better company than a haughty bat or a jibbering moron of a White, and certainly much, much nicer than the human wizard, with his noxious spells and offhand death-dealing.

After his jailers had left he had spoken to his fellow prisoners, but only one had replied and his jibbering tones assured the American that the poor wretch had been reduced to stark insanity by the horrors of imprisonment in this foul hole.

You have not only the honor of being my steward, but the privilege of being the worst, most incompetent, drivelling snivelling jibbering jabbering idiot of a steward in France.