Huckster
A huckster was a derogatory term to describe a pushy, eloquent salesperson.

In 2000, Shannon O'Donnel described the people who tried to convince others that the new millennium was actually 2001 rather than 2000 and was therefore significant as hucksters. ()

In 2366, Data complimented Kivas Fajo's debating skills, noting that they were wasted on his hucksterism and greedy pursuits. ()

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Economic occupations
Insults