Nondemanding usually refers to something that is easy, simple, or effortless. Its antonyms, on the other hand, refer to something that is difficult, challenging, or demanding. Some antonyms for nondemanding include strenuous, challenging, arduous, difficult, demanding, and complicated. These adjectives describe tasks or activities that require a lot of effort, skill, or focus to carry out successfully. For instance, a challenging job may require you to work long hours, solve complex problems, and make difficult decisions. Similarly, a demanding workout may require you to push your body to its physical limits. In contrast, an activity that is nondemanding is simple or easy to do, and requires little effort or skill.