Rigid designator

A **rigid designator** is a term used in philosophy, particularly in the field of metaphysics and the philosophy of language, to refer to a term or expression that denotes the same object or entity in all possible worlds where that object exists. The concept is closely associated with the work of philosopher Saul Kripke, especially in his book "Naming and Necessity." To break it down further: 1. **Rigid Designators vs.