charlatan
noun /ˈʃɑːlətən/
/ˈʃɑːrlətən/
- a person who claims to have knowledge or skills that they do not really have
- He knows nothing about medicine—he’s a complete charlatan.
Word Originearly 17th cent. (denoting a travelling seller of supposed remedies): from French, from Italian ciarlatano, from ciarlare ‘to babble’.