The phrase "most hang tough" implies a sense of strength and resiliency in the face of obstacles or challenges. However, there are several antonyms that could be used to describe the opposite of this mindset. Some antonyms for "hang tough" might include words like weak, faltering, giving up, or surrendering. These words suggest a sense of defeat or lack of determination, which can be especially damaging in situations where perseverance is required. Despite the challenges that may arise, it is important to remain positive and resilient, resisting the temptation to give up or lose faith in oneself.