The term 'OFFICIAL LIST' can be solved by the 8-letter word 'REGISTER'. A REGISTER is a list of items, typically official or legal in nature, that are kept in order and can be referred to for various purposes. It is often used to keep track of important information such as names, dates, and other details. For example, a REGISTER may be used to record the names of people who have registered for an event or to keep track of the members of an organization.