bequiver

— 1952, Isaac Asimov, "The Mule", in Foundation and Empire, Ballantine Books (1983), →ISBN, page 142, "Yes?" The clown stirred uneasily. "That may be, my lady, but he has questioned me before, and his manner is of an abruptness and loudness that bequivers me. He is full of strange words, so that the answers to his questions could not worm out of my throat. Almost, I might believe the romancer who once played on my ignorance with a tale that, at such moments, the heart lodged in the windpipe and prevented speech."