An accessible and thorough introduction to implicatures, a key topic in all frameworks of pragmatics. Starting with a definition of the various types of implicatures in Gricean, neo-Gricean and post-Gricean pragmatics, the book covers many important questions for current pragmatic theories, namely: the distinction between explicit and implicit forms of pragmatic enrichment, the criteria for drawing a line between semantic and pragmatic meaning, the relations between the structure of language (syntax) and its use (pragmatics), the social and cognitive factors underlying the use of implicatures by native speakers, and the factors influencing their acquisition for children and second language learners. Written in non-technical language, Implicatures will appeal to students and teachers in linguistics, applied linguistics, psychology and sociology, who are interested in how language is used for communication, and how children and learners develop pragmatic skills.