The phrase "a slick man" is correct and usable in written English.
It can be used to describe someone who is smooth, charming, or perhaps deceitful in their mannerisms or behavior.
Example: "He was known as a slick man, always able to talk his way out of trouble and win people over with his charisma."
Alternatives: "a smooth talker" or "a charming individual".
In "Clay Pigeons Mr. Vaughnn plays a slick con man, whereas Mr. Phoenix plays a weak, sometimes wrongheaded man who is fundamentally decent.
He's not easily identifiable as a deliberately duff magician (like Tommy Cooper) or a slick gag man (Bob Monkhouse).
Since Josh Bolten took over as chief of staff, the White House has seen the appointment of a Wall Street giant, Hank Paulson, to run the Treasury, the arrival of a slick media man, Tony Snow, to run public relations, and advances in Iraq.
Isaiah Washington (veteran of many Spike Lee films, and others, including "Bulworth" and "Out of Sight") plays George, a slick, careful man who becomes an executive at the new network and plans to make his mark quickly.
As Martin, Jeremy Northam slides effortlessly down the ladder from the elegant romantic characters of "Gosford Park" and "Possession" to become a slick ladies' man, ready-made for the Rat Pack, calling everyone around him "Pal-y".
This time, Frank is not a small-town businessman who needs to be bailed out of depression and failure by a sweet, father-figure angel; he is a Wall Street wheeler-dealer who needs a slick soul man who can sell him compassion to match his conservatism.
One of the few County players still with the club after last season, midfielder Yan Klukowski, volleyed over the bar after a slick five-man move.
Donaldson beat the offside trap to tap in number four from close range, the ex-Crewe striker then firing the fifth after a slick, six-man passing move, Brad Inman had the visitors' only real glimpse of goal but sliced his effort wide when set up by Byron Moore.
After more than 14 years as art director of the rock 'n' roll bible Rolling Stone, the Mississippi native had arrived to do a makeover on the slick men's fashion publication GQ.
The myth is puffing its chest and fixing its tie and congratulating us just for getting here, sitting wide-eyed before a slick-haired man.
