Upon entering Soupir the French troops found in cellars where they had concealed themselves thirty people who had gone raving mad and who cried and pleaded to remain so that they could still hear the shells and gibber at death.
"The Soul of the War"
Philip Gibbs
He seldom uttered a sound beyond a gibber, and hardly seemed to be conscious.
"The Crooked House"
Brandon Fleming
Colley gibber, in his "Apology," pays devoted testimony to her charms.
"A History of the Four Georges, Volume I (of 4)"
Justin McCarthy