The muscles of his whole body contracted spasmodically and instinctively, the hair on his neck and shoulders stood on end, and with a ferocious snarl he bounded straight up into the blinding day, the snow flying about him in a flashing cloud.
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.