The phrase "a considerable harm" is correct and usable in written English.
It can be used when discussing the impact or damage caused by an action, event, or situation.
Example: "The pollution from the factory has caused a considerable harm to the local wildlife."
Alternatives: "significant damage" or "substantial harm".
"But if the United States declares that its success in this effort will be measured by its ability to kill bin Laden once he has been taken prisoner and rendered harmless," the memo says, "the story line will quickly shift in a direction that could do considerable harm to long-term American interests".
"There is an increasing prospect of a population explosion that could do considerable harm to other wildlife through the uncontrolled damming up of watercourses which can, among other things, prevent fish from reaching their spawning grounds," he said.
There is evidence that irrational prescribing in primary care may introduce considerable harm, resulting in a number of hospital admissions due to adverse drug events [ 4].
But as a footnote to every major article about a major presidential candidate, I believe that this causes considerable harm to The Huffington Post as a serious media source.
Such policies have only not done considerable harm because of an extraordinary proliferation of efficient rental markets (see article).The original green revolution transformed Asia from a continent stalked by hunger into one that could think and plan beyond the next harvest.
Signing up with an incompetent SEO agency can do considerable harm to your business.
Bush's is not only a failed policy, it is one which does considerable harm.
"There may be some that we really have a fight over," said Senator Lindsey Graham, Republican of South Carolina, saying a drawn-out argument over nominations could do considerable harm to the Senate.
But even a very small number of returning extremists could cause considerable harm.
