In a precipitate manner; with sudden descent; headlong; hastily; without due deliberation; with a sudden subsiding motion.

adverb. In a precipitate manner; headlong; hastily; rashly.

adverb. In a precipitate manner.

adverb. at breakneck speed

"The Earl, invigorated with hope and joy, had by the force of his arm, almost wrenched from its fastening, one of the iron bars of the grate; his foot was lifted to the stanchion, ready to aid him in escaping through the opening, when he was seized by the guards of the Baron, and conveyed precipitately from the prison."

hastily  headlong  rashly