1) Clever, specious reasoners 2) Fallacious reasoners 3) Superficial reasoners 
Considered the first professional teachers of oratory and rhetoric (ancient Greece 4th Century B.C.).
professional traveling teachers of rhetoric and other subjects, noted for their ingenuity and speciousness.
(5th Cent B.C.) Wandering teachers who came to Athens from foreign cities, and sought to popularize knowledge. They filled a need felt in Greece at this time for a general dissemination of that scientific knowledge which had previously been more or less privately cultivated in learned societies. Nowhere was this need more widespread than in Athens....