What is stronger than the US dollar?

Could you please elaborate on what you mean by "stronger" in the context of currencies? Are you referring to purchasing power, stability, global acceptance, or some other metric? It's important to note that the strength of a currency is relative and can depend on various factors such as economic growth, inflation rates, political stability, and foreign exchange rates. With that in mind, some currencies, such as the Euro or the Japanese Yen, may be considered stronger than the US dollar in certain aspects, but it's difficult to make a blanket statement without specifying the criteria for strength. Could you please provide more context or clarify your question?