In addition to expressing some main content, utterances often convey secondary content, which is content that is not their “main point”, but which rather provides side or background information, is less prominent than the main content, and shows distinctive behavior with respect to its role in discourse structure and which discourse moves it licenses. This volume collects original research papers on the semantics and pragmatics of secondary content. By covering a broad variety of linguistic phenomena that convey secondary content – including expressives, various particles, adverbials, pronouns, quotations, and dogwhistle language – the contributions show that secondary content is pervasive throughout different aspects of natural language and provide new insight into the nature of secondary content through new semantic and pragmatic analyses.