The word "more casehardened" refers to someone who has become even more resistant to emotion or empathy. Antonyms for this phrase could include "vulnerable," "sensitive," "sympathetic," "empathetic," and "compassionate." Rather than being hardened to the world around them, these individuals are open to feeling and understanding the emotions of others. They are not closed off or distant, but instead are willing to connect with others and show kindness and support. By being less casehardened, individuals can create deeper and more meaningful relationships with those around them, leading to a more fulfilling and enriched life.