Dorothea darted instantaneously from the window; Will followed her, seizing her hand with a spasmodic movement; and so they stood, with their hands clasped, like two children, looking out on the storm, while the thunder gave a tremendous crack and roll above them, and the rain began to pour down.
Rosamond in her agitated absorption had not noticed the silently advancing figure; but when Dorothea, after the first immeasurable instant of this vision, moved confusedly backward and found herself impeded by some piece of furniture, Rosamond was suddenly aware of her presence, and with a spasmodic movement snatched away her hands and rose, looking at Dorothea who was necessarily arrested.
There are no more uses of "spasmodic" in the book.
Show samples from other sources
—I wonder if your eyes and ears ever make anything save spasmodic contact with your brain.
Harper Lee -- Go Set a Watchman
She sits and her cane flexes against the gravel and the boy clicks his buttons in spasmodic flurries.