Showing mercy, an act of forgiveness or kindness towards others, has its opposite in the form of cruelty or harshness. While mercy involves being lenient or compassionate, its antonyms are callousness, indifference, and brutality. Being cruel is the opposite of showing mercy, as it involves intentionally causing pain or harm to others. Indifference, on the other hand, implies a lack of concern or empathy towards those in need. The act of punishing or treating someone harshly without any regard for their well-being is also an antonym of showing mercy. Therefore, by understanding the antonyms of mercy, we can appreciate the value of kindness and compassion towards others.