Debrett's is a well-known and established brand that has become synonymous with etiquette, manners, and social conventions in the United Kingdom. The brand's history dates back to the 18th century, and today, Debrett's is recognized as a leading authority on all aspects of British social behavior. However, there are several synonyms that can be used to describe Debrett's. These include terms such as etiquette guide, social rules, protocol book, manners handbook, and politeness manual. While these words essentially convey the same meaning as Debrett's, they are useful for providing alternative ways of describing and referring to the brand's products and services.