The phrase "a deadly drop" is correct and usable in written English.
It can be used to describe a significant and dangerous fall, often in contexts related to heights or steep descents.
Example: "The hiker stood at the edge of the cliff, staring down at the deadly drop that awaited below."
Alternatives: "a fatal plunge" or "a perilous fall."
Henman sent a deadly drop shot just out of Muster's reach.
The three cases involved patients who had digestive track tissues being destroyed by sepsis, an infectious condition, which apparently allowed the dye to enter the bloodstream, causing a deadly drop in blood pressure and an increase in acid levels.
He still bears the scars of his years as a bruiser on the squash court — Senator Robert Packwood once gave him a swat that took six stitches to close — but he now plays more of a finesse game, built around a deadly drop shot.
Despite his annoyance, it was the Pole who pressed hard early in the third set and, after Murray saved two break points with aces, Janowicz finally converted at the seventh time of asking with a deadly drop shot.
Let's see her do another handstand at the very edge of a deadly drop, just the once.
Recently, Russian urban explorers from On The Roofs scaled Moscow's massive Olympic Stadium, boards in tow, and turned it into a half-pipe with a deadly drop.
The setup sounds a lot like the typical daredevil parachuting from a plane, but in Eustace's case, the singular twist involved less of a jump, and more of a lift followed by a potentially deadly drop.
Nothing but a long deadly drop into the crashing sea far below.
It was the Briton who swept into the net and grabbed the early break at 1-1 with a forehand volley, and two deadly drop shots eased him into a 5-1 lead before he clinched the set with a forehand into the corner.
But exercise can also lead to precipitous, even deadly, drops in blood sugar.
Few survive the drop, a deadly success rate that, when coupled with its landmark status, has made the bridge a top destination for those contemplating suicide.
