A monolog can be described in numerous different ways, with a variety of synonyms available to describe this particular form of speech. Some common synonyms include soliloquy, lecture, discourse, address, oration, sermon, speech, and homily. Each of these words carries a slightly different connotation, ranging from a more formal presentation to a more informal conversation. Whether characterized as a monolog or any of its synonyms, this type of speech is typically characterized by a single person offering an extended and uninterrupted talk on a particular subject, often without the input of other individuals or parties.