Unprepared speeches are the antithesis of prepared speeches. An unprepared speech lacks the polish, coherence, and clarity of a well-planned speech, and it often lacks direction, structure, and purpose. Unprepared speeches are characterized by ums, ahs, and pauses, as well as by rambling, tangential, and irrelevant remarks. They may also be characterized by nervousness, anxiety, and uncertainty, and they may fail to engage or persuade the audience. In contrast, prepared speeches are the product of careful thought, research, and practice, and they are designed to inform, entertain, inspire, or persuade the audience. Prepared speeches are polished, articulate, and effective, and they leave a lasting impression on the listener.