A soapbox orator is someone who delivers their opinions or thoughts in a loud, declamatory manner, often in a public setting. Some synonyms for this term include a rabble-rouser, a demagogue, a speechmaker, a pontificator, a preacher, and a grandstander. Other terms that may be used include a haranguer, a diatribe speaker, a fiery orator, and a peroration deliverer. These words all describe someone who is passionate about their opinions and beliefs, but may not always be clear or persuasive in their delivery. Whether you use the term soapbox orator or one of its many synonyms, you can understand that this type of speaking style can be both entertaining and frustrating for audiences.