In "The Most Dangerous Game," how does General Zaroff show the character trait "deceptive?"

In this story, General Zaroff is not really deceptive in
his dealings with Sanger Rainsford.  He comes straight out and tells him that he hunts
people on this island.  However, his whole character is meant to be somewhat deceptive
in that he tries to use cultured ways to cover up the reality of who he truly
is.

In truth, General Zaroff is nothing more than a
murderer.  Worse, he is a murderer who kills not out of hate or passion but simply for
his own fun.  This is his true character.  Even so, he tries to cover up who he is.  He
acts like a refined aristocrat.  He has fine wines, he hums parts from operas, and
generally acts like a gentleman.  This is deceptive, because he is anything but a true
gentleman.