The opposite of "more nonactive" can be expressed in many ways, depending on the context. Some common antonyms include "active," "energetic," "engaged," "driven," "busy," "productive," and "dynamic." These words convey a sense of movement, action, and progress that stands in direct contrast to the idea of being stagnant, apathetic, or inactive. The opposite of "more nonactive" can also be expressed in more figurative terms, such as "vibrant," "lively," "effervescent," or "buoyant," which suggest a positive and uplifting energy that pervades a person, place, or thing.