The word "diddle-daddled" means to waste time, dawdle or procrastinate. Some antonyms of this word include focused, determined, purposeful, diligent, productive, and efficient. To be focused is to be concentrating on something important, paying attention to detail, and not allowing distractions to interfere with the task at hand. Determined people are motivated and committed to achieving their goals, not delaying or postponing them. Being purposeful means that you have a clear reason for your actions and that you carefully consider your options. Diligent people are hardworking and careful, paying attention to the task until it is satisfactorily completed. To be productive and efficient, you must manage your time effectively and not waste any valuable minutes.