Most sympathizing is a term used to define a person who shows the most understanding, empathy, and concern towards others. Antonyms for this term could include words such as apathetic, cold-hearted, indifferent, insensible, and unfeeling. An apathetic person lacks any feeling or interest towards others and is not easily moved emotionally. A cold-hearted individual is cruel and uncaring, lacking in sympathy and compassion. Someone who is indifferent is not concerned or interested in others and shows no emotional attachment. An insensible person lacks sensitivity, empathy and is insensitive towards others. Lastly, an unfeeling person lacks emotion, sensitivity, and compassion towards others. These antonyms highlight the opposite of what it means to be most sympathizing, showing a lack of concern towards others.