Smooth Operator Meaning

(idiomatic) A skillful, manipulative person, con artist, or clever scoundrel.

Example: Used other than as an idiom: see smooth,‎ operator.
1986, "American Notes: Agriculture," Time, 10 Feb:
  In Washington he has earned a reputation as a smooth operator who can handle lobbyists, bureaucrats and even Congressmen, with a cool head.
2008, Andy Katz, "Tourney Trail," ESPN.com, 17 Mar. (retrieved 13 Oct. 2008):
  Alexander lit up Connecticut for 34 points in a Big East quarterfinal win last week. He is a smooth operator who can score in a variety of ways.
1972, Fred Wright, "Film Review: Sex Film Minus Punchline?," St. Petersburg Independent, 29 Sep., p. 5-B (retrieved 13 Oct. 2008):
  He plays the hospital administrator, a fast-talking smooth operator who cons patients and doctors alike.