There are several synonyms for the word "outrivaling", which means to surpass or exceed in achievement, performance, or excellence. Some of these synonyms include outperforming, outshining, excelling, surpassing, eclipsing, outdoing, besting, and topping. These words all convey the idea of being better, superior or more successful than others in a particular domain. For example, a champion outrivals his or her opponents by winning more tournaments or matches. A successful entrepreneur may outrival his or her competitors by launching innovative products or services. Whether in sports, business, or any other field, outrivaling is the key to achieving success and standing out from the crowd.