The phrase "a professional hit" is correct and usable in written English.
It can be used in contexts discussing contract killings or assassinations carried out by skilled individuals.
Example: "The detective uncovered evidence suggesting that the murder was not random but rather a professional hit orchestrated by a crime syndicate."
Alternatives: "contract killing" or "assassination job".
And the immediate conclusion was that it was a professional hit.
One thing that a professional hit man does not need is a conscience.
Perhaps we could imagine that anyone eligible for a professional hit somehow "deserved it" by consorting with the wrong people.
He died instantly when his car blew up and crashed into a shop-front, in what bore the hallmarks of a professional hit.
Sept. 1 THE AMERICAN A professional hit man (George Clooney) living in Italy agrees to perform one last assassination — never a good idea in a genre film.
I believe it was a professional hit, done by someone who knows how to use guns, because of the distance and the precision".
A decade before Marvin Miller came to baseball, Stan Musial, one of the greatest players in the history of the game, had his worst season as a professional, hitting seventy-six points below his career average.
A 6-foot-5, 226-pound outfielder, Stanton, whose full name is Giancarlo Cruz-Michael Stanton, dominated the South Atlantic League last season, his first as a professional, hitting.293 with 68 extra-base hits (39 home runs) for Class A Greensboro.
In Richard Shepard's "The Matador," a sleazy professional hit man (Pierce Brosnan), lonely and self-disgusted, shares a few drinks with a married working stiff (Greg Kinnear) in a Mexico City hotel bar.
But his reputation and his extensive security made anything but a highly professional hit unlikely.
And if Ankara turned down an American offer to mount an Osama bin Laden style manhunt for the P.K.K. high command in the Kandil, as the U.S. ambassador to Turkey famously revealed this fall, it probably did not sabotage its own negotiations by staging a headline-grabbing professional hit in the middle of Paris.
