The term 'established order' can be summarized as a SYSTEM that has been in place for a long period of time and is accepted as the norm. The crossword solution for this term is 'SYSTEM', which implies a set of rules or regulations that have been established and are expected to be followed. This could refer to any type of SYSTEM, such as a government, a business, or a social structure. Established order is often used to describe a situation where the status quo is maintained and change is discouraged.