pitchman

/ˈpɪtʃˌmæn/
noun
  1. A person who makes a persuasive sales pitch, especially one who sells products on television, at a fair, or in a market, often in a loud or enthusiastic way.
    • He worked as a pitchman for a kitchen gadget company, traveling to trade shows across the country.
    • The pitchman on the late-night infomercial convinced thousands to buy the vegetable chopper.
    • At the county fair, a pitchman demonstrated a mop that could clean up any spill.
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