imposture
The act or conduct of an impostor; deception practiced under a false or assumed character; fraud or imposition.
countable, uncountable
Among an unenlightened people every impoſture is likely to take place, for ignorance is the parent of credulity.
Where it comes from
From Middle French imposture, from Late Latin impostura, Latin impostus.
Adapted from the Wiktionary entry imposture (CC BY-SA 4.0).