huckster (n.)

c. 1200, "petty merchant, peddler" (often contemptuous), from Middle Dutch hokester "peddler," from hoken "to peddle" (see hawk (v.1)) + agent suffix -ster (which was typically feminine in English, but not in Low German). Specific sense of "advertising salesman" is from 1946 novel by Frederick Wakeman. As a verb from 1590s. Related: Huckstered; huckstering.