the.com/charlatan

means A person who fakes expertise or skill to deceive others, especially for money or status.

from From French 'charlatan,' borrowed from Italian 'ciarlatano' — itself likely tied to 'ciarlare,' meaning to prattle or babble endlessly. The imagery is of a market huckster, often linked to the town of Cerreto (whose peddlers had a reputation for loud sales patter), talking fast and loud to sell fake medicine. The loud talk, not the fake cure, is the etymological heart of the word.