The antonyms for the word "more ironhearted" would be somewhat softer and compassionate. Some antonyms for "ironhearted" would be kindhearted, sympathetic, compassionate, gentle, tenderhearted, and humane. These words refer to someone who is sensitive to the needs and feelings of others and who shows empathy and understanding. They are the opposite of someone who is ruthless, hard-hearted, and unfeeling. Being more compassionate and empathetic can be a valuable trait in many situations, as it helps to build stronger relationships, foster understanding, and promote mutual respect. So, the antonyms of "more ironhearted" are truly important and essential in our day-to-day lives.