a person who successfully manipulates people or situations
Professional athletes tend to be smooth operators.
The nature of the show aside, the president brings a fair amount of smooth operator cheesiness to his performance.
The Situation is really aggressive—literally picking up girls and placing them on counters—and you're more of a smooth operator.
But Gaspard, a “smooth operator,” according to one DNC political organizer, is not shy about wading into a fight.
The silver-haired Hinton is widely described as a smooth operator.
A person who is attractive, pleasant, and full of finesse: thought of Dr Hugo Barker as a smooth article/ You think you're such a smoothie
[1933+ Students; smoothie is like slicker, but today lacks the connotations of dishonesty and trickiness]