This article investigates and classifies the different meanings of the term sovereignty. What exactly do we try to convey when using the words “sovereign” or “sovereignty”? I will argue that, when saying that X is sovereign, we can mean five different things: it can mean that X holds the capacity to force everyone into obedience, that X makes the laws, that the legal and political order is created by X, that X holds the competence to alter the basic norms of our legal and political order, or that X is independently active on the international stage. These different usages of the term are of course related, but they are distinct and cannot be fully reduced to one another.