A ballyhooer is a person who promotes or advertises something in a loud and exaggerated way. There are various synonyms for this word, such as a hype man, a pitchman, a propagandist, a booster, a spielman, a showman, or a promoter. Each of these words denotes the same meaning, i.e., someone who tries to grab people's attention and convince them to buy a product or service. A hype man is usually associated with the music industry, while a pitchman is someone who is good at convincing people to buy something. A propagandist promotes a political agenda, and a booster is someone who supports a particular cause or organization. A spielman or a showman are associated with circus or entertainment industry, and a promoter is someone who organizes and advertises events.