The word softheartednesses refers to the quality of being kind, gentle, and sympathetic. Its antonyms are words that describe the opposite of this quality. Some antonyms for softheartednesses include harshness, callousness, and cruelty. These words suggest a lack of empathy or concern for others' feelings. They indicate a tendency to be unfeeling, indifferent, or unsympathetic. Other antonyms for softheartednesses can include sternness, coldness, and indifference. These words suggest a lack of emotional warmth or tenderness. They imply a distancing from emotional experiences and a preference for logic and reason over compassion and empathy.