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A person who makes elaborate, fraudulent, and often voluble claims to skill or knowledge; a quack or fraud.
[French, from Italian ciarlatano, probably alteration (influenced by ciarlare, to prattle) of cerretano, inhabitant of Cerreto, a city of Italy once famous for its quacks.]
char′la·tan′ic (-tăn′ĭk), char′la·tan′i·cal adj.
char′la·tan·ism, char′la·tan·ry n.
of or relating to a charlatan