Mercilessness is the absence of mercy or compassion. Its antonyms are empathy, kindness, mercy, sympathy, humanity, and benevolence. Empathy is the ability to understand and share the feelings of others. Kindness is the quality of being friendly, generous, and considerate. Mercy is the compassionate treatment shown to those who are in distress or need. Sympathy is the feeling of pity and sorrow for someone's misfortune. Humanity is the quality of being humane, compassionate, and understanding. Benevolence is the desire to do good and help others. These antonyms show the opposite of mercilessness and highlight the importance of showing kindness and mercy towards others.