The story
- Old Italian · derived fromciarlatano“quack”
- Middle French · derived fromcharlatan
- English todaycharlatan
From Middle French charlatan, from Old Italian ciarlatano (“quack”), a blend of ciarlatore (“chatterer”) + cerretano (“hawker, quack”, literally “native of Cerreto”) (Cerreto di Spoleto being a village in Umbria, known for its quacks).
Etymology from Wiktionary, CC BY-SA 4.0.