"Passpartout" is a term that refers to a generic key that can open multiple locks. In common usage, it is often used to describe a master key or a universal tool. Synonyms for "passpartout" include "skeleton key," "master key," "universal key," or "multipurpose key." These terms all have similar meanings, as they are designed to open locks without requiring a specific matching key. Other synonyms for "passpartout" may include "jiggler keys" or "bump keys," which are specialized tools used by locksmiths to manipulate locks. Whatever the term used, all these words convey the same idea of a versatile key that can be used to access locked places with ease.