The word "nonviable" means something that is not able to survive or thrive. Therefore, finding antonyms for "more nonviable" can involve looking for words that denote growth, development, and vitality. Antonyms for "more nonviable" could include "viable," "productive," "thriving," "flourishing," "successful," and "prosperous." These words suggest a state of being that is the opposite of "nonviable," indicating the potential for growth and development. In order to build a sustainable future, it is important to focus on these antonyms, enabling individuals and societies to thrive and prosper, rather than stagnating or fading away.