The Central Role of Politeness in Business Communication: The Appropriateness Principle as the Way to Enhance Business Communication EfficiencyThe paper focuses on practical consequences of exploitation of applied linguistics, and moreover intercultural linguistics, in everyday business communication and modern management from the viewpoint of politeness principles. The authors assume that the intentional use of the theoretical principles of intercultural linguistics concerning politeness strategies can possibly improve business communication efficiency in the current intercultural environment. Therefore, intercultural linguistics is a pragmatic discipline with potential utilization in everyday business communication and international management practices. Politeness as a basic communicative principle has recently experienced a wide interest of scholars as the area of interactional pragmatics examining a vast range of topics connected to languages and their varieties and their interaction in the context of culture; however, the practical implications are still missing