The phrase "a dreadful impact" is correct and usable in written English.
It can be used to describe a negative or harmful effect that something has on a situation or individual.
Example: "The sudden economic downturn had a dreadful impact on small businesses across the country."
Alternatives: "a devastating effect" or "a terrible consequence."
It also has a dreadful impact on those paid to provide state-funded care.
I am not prepared to sit back and watch it continue to have such a dreadful impact.
Humanity was beginning to have a dreadful impact on wildlife and in particular on birds, Carson argued.
"For me, what it signals is that the Tory cuts have had a dreadful impact on people's lives," says Brabin.
"Flooding has a dreadful impact on people's lives and my heart goes out to them.
Not the conversation that politicians always claim we are avoiding, about the dreadful impact of migration – but a conversation about our needs as an ageing nation, about our economic and foreign policies, about how immigrants contribute far more in taxes than they take in benefits, and about the fact that there are considerably fewer of them than British people think.
Stuart Schwartz, an executive with Hoenig & Company, a market research firm in Rye Brook, N.Y., spoke to a client yesterday whose daughter had been talking with a friend at Cantor at the moment of Tuesday's dreadful impact.
The loss of a child is never less than devastating, but circumstances in China magnify this dreadful impact.
The researchers, whose work is regarded as the most comprehensive yet, say their findings in no way diminish the dreadful impact Old World diseases had on the people of the New World.
Is Climate Change's Most Dreadful Impact Really Decades Away?
You violate their human rights with brazen impunity and never came to grips with the debilitating and dreadful impact of nearly 50 years of occupation.
