Stupendous/stuːˈpendəs/ Definition 1 of 1Pro Tip 1/3Positive Emphasis Use 'stupendous' to express strong positive praise for something impressive or amazing. She received a stupendous ovation for her performance. Pro Tip 2/3Scale and Impact 'Stupendous' often indicates something of a grand scale or impact that amazes people. The fireworks show was absolutely stupendous. Pro Tip 3/3Not Understated 'Stupendous' is not for describing something ordinary; it's for things that are extraordinary. The discovery of the ancient city was stupendous.