The term "most hang-tough" implies a high level of resilience and perseverance, making it challenging to find exact antonyms. However, some possible antonyms for this term include "weak-willed," "timid," "quitter," or "easily discouraged." These antonyms all suggest a lack of stamina, determination, and grit. Other possible antonyms could include "prone to giving up," "fragile," "indecisive," or "vulnerable to setbacks." It's essential to note that none of these antonyms contain the same level of strength and persistence as "most hang-tough," which is why it remains a powerful and meaningful term.