Definitions for "Sharper"
A person who bargains closely, especially, one who cheats in bargains; a swinder; also, a cheating gamester.
A sharper is an older term, common since the seventeenth-century, for thieves who use trickery to part an owner with his or her money possessions. Sharpers vary from what we now call con-men by virtue of the simplicity of their cons, which often were impromptu, rather than carefully orchestrated, though those certainly happened as well. The 1737 Dictionary of Thieving Slang defines a sharper as "A Cheat, One who lives by his wits."
a person who swindles you by means of deception or fraud