A person who promotes or advertises something loudly and energetically, often with exaggeration or hype.
From 'ballyhoo,' likely derived from the Irish town of Ballyhooly or from Irish 'baile' (town) combined with 'hoo,' first appearing in American English around 1900 as carnival and promotional jargon.
Ballyhooing became a booming profession during the circus and carnival era of the 1800s and early 1900s—con artists and showmen perfected the art of talking people into tents with wild claims that often bent the truth, making this the original 'influencer' of the pre-digital age.
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