This innovative work provides the first comprehensive account of general extenders ("or something", "and stuff", "or whatever"). Combining insights from linguistics, cognitive psychology, and interactional sociolinguistics, the author demonstrates that these small phrases are not simply vague expressions, but have a powerful role in making interpersonal communication work. The audience for this book includes linguists, scholars of English, teachers of English as a first and a second language, sociolinguists, psycholinguists, and communications researchers.