敏捷,机敏
Promptness \Prompt"ness\, n. 1. Promptitude; readiness; quickness of decision or action. 2. Cheerful willingness; alacrity.
promptness n 1: the characteristic of doing things without delay [syn: {promptitude}] 2: the quality or habit of adhering to an appointed time [syn: {punctuality}] [ant: {tardiness}]