To-do lists are an essential tool to keep one organized, focused, and efficient. However, using the same term over and over again can become monotonous and boring. There are several synonyms for to-do lists that can add variety and enthusiasm to your task management system. One popular alternative is "task list," simple yet effective and similar in meaning to the original term. "Checklist" is another widely used synonym that centers around the idea of ticking off accomplished tasks. "Action plan" is a more formal term that implies a comprehensive approach to completing objectives. "Agenda" is also a suitable synonym that can refer to a specific plan or schedule of activities.