Selfless contribution is a term used to describe something given or done without expecting any personal gain or reward in return. There are several synonyms that convey the same meaning, such as benevolent contribution, generous offering, altruistic gift, unselfish donation, charitable act, philanthropic gesture, and magnanimous contribution. These words all describe an act of giving that is motivated by a desire to help others and make a positive difference in the world, rather than a desire for personal gain or recognition. Each of these synonyms conveys a similar sentiment and highlights the importance of giving back and making a selfless contribution to society.