English

Adjective

impostrous ‎(comparative more impostrous, superlative most impostrous)

1. (archaic) Characterized by imposture; deceitful.
   • George Grote, A History of Greece

     Rhetoric (argues Plato in the dialogue called Gorgias) is no art whatever, but a mere unscientific knack, enslaved to the dominant prejudices, and nothing better than an impostrous parody on the true political art.