The phrase "pays back spades" means to reciprocate an action or behavior in a negative or harmful way. Its antonyms would be words that represent positive and constructive behaviors such as generosity, kindness, forgiveness, and compassion. Other antonyms for "pays back spades" include benevolence, understanding, empathy, sympathy, and magnanimity. These words imply a willingness to overlook faults, understand differences, and extend kindness. When applied in everyday life, these antonyms can promote positivity, peaceful coexistence, and improved relationships. Choosing to break the cycle of negativity by being kind to others can go a long way in fostering a more harmonious society.