The term "top-tier" is an adjective used to describe something that is considered superior or in a higher class than others. It can be applied to various contexts, including products, services, and people. In general usage, it refers to the highest level of quality, excellence, or prestige within a particular category. For example, top-tier universities are those with high academic standards and reputations for providing excellent education and research opportunities. Similarly, top-tier athletes are considered the best in their sport, while top-tier companies are known for their innovation, success, and strong brand recognition. The term "top tier" implies a level of excellence that is above and beyond what is expected or typical.