Hucksterism (noun)

The practice of promoting or selling goods in an aggressive, unethical, or deceitful manner.

Origin:

From the middle english word hokestere, meaning 'seller of small wares'.

Examples:

1. The hucksterism of the salesperson was so obvious, it was almost comical.
2. The hucksterism of the televangelist was exposed when it was revealed that he was using his religious platform to sell miracle cures.
3. The hucksterism of the street vendor was notorious, as he was known to sell counterfeit goods.
4. The hucksterism of the car dealer was frustrating, as he used high-pressure tactics to make the sale.
5. The hucksterism of the telemarketer was intrusive, as they called at all hours of the day and night.