Reciprocal altruism is a concept that refers to helping others with the expectation that they will help you in return. In other words, it's a form of social behavior that involves mutual benefit. Some synonyms for reciprocal altruism include reciprocal helping, mutual aid, collaborative reciprocity, mutual benefit, and cooperation. These terms all refer to the idea of individuals working together to achieve a common goal, with each member contributing their own unique skills and resources for the benefit of all. Whether in the context of human relationships or animal behavior, reciprocal altruism is an important concept that helps to foster trust, cooperation, and mutual respect between individuals.