The burgeoning field of sociolinguistics (the socially oriented study of language) is characterized by increasing heterogeneity and a proliferation of theories, concepts, and new terminology. This dictionary is designed to help a user navigate a way through the complex discipline. The entries are organized alphabetically and are explained with a minimum of academic jargon. The dictionary accommodates a broad interpretation of sociolinguistics, including macro- and micro-sociolinguistics and a range of approaches within variationist, interactional, critical, and applied traditions. The authors draw from professional experience in all areas of sociolinguistics and a variety of geographical areas, including the United States, United Kingdom and Europe, Australia, southern Africa, and the Indian subcontinent. Topics covered are relevant to a number of academic disciplines, such as anthropology, psychology, communications, sociology, education, and linguistics.