Another word for decisiveness

A man of decisive action when his mind was made up on any given question, his very decisiveness sometimes gave the impression that his judgments were hasty.

"Yes," she said, but with little decisiveness.

Though at first his long hair, his threadbare cloak and his staff furnished the subject of many a jest, and his harsh and overbearing manner caused grave discontent, yet the rapidity and decisiveness of his movements, won the sympathy and respect of the Syracusans.