The word "un demanding" implies that something is easy or not requiring much effort. Some antonyms for this term include challenging, difficult, hard, laborious, demanding, strenuous, tough, and demanding. If something is the opposite of "un demanding," then it requires extra effort, skill, or energy. For example, a challenging task might require someone to use their problem-solving skills, while a laborious task might require someone to work for long hours. Similarly, a tough job might test someone's endurance, and a demanding role might require someone to take on multiple responsibilities. Therefore, understanding the antonyms of "un demanding" is essential to express the right feeling or requirement for the task at hand.