"Hast mercy on" is a phrase that denotes compassion, kindness, and forgiveness. Its antonyms are words that express the opposite of these positive attributes. They are words such as "cruel," "heartless," and "unkind." They indicate a lack of empathy, sympathy, and consideration for others. The antonyms of "hast mercy on" signify a lack of forgiveness and mercy, and instead, embody harshness and unfeelingness. These words suggest a disregard for human life, feelings, and emotions. In contrast, the antonyms of "hast mercy on" urge us to approach others with love, sympathy, and understanding, promoting a more compassionate and empathetic culture.