The phrase "a substantial cut in" is correct and usable in written English.
It can be used when discussing a significant reduction in something, such as budget, funding, or resources.
Example: "The company announced a substantial cut in its annual budget, affecting several departments."
Alternatives: "a significant reduction in" or "a major decrease in".
The Labour motion calling for the abolition was defeated by 252 to 226, a substantial cut in the coalition majority.
Another goal is to make "a substantial cut" in the agency's network of 130 representative offices around the world.
But such a substantial cut in stated reserves, he said, "puts a very big question mark over anything they tell us".
In most cases, it meant that the main breadwinner was, at best, facing a substantial cut in salary and, at worst, unable to work at all.
"We usually at this stage do a substantial cut in funding for all museums, and I suspect that will happen again.
This is like suggesting that a substantial cut in the amount of football played in England would improve the national team.
"If we hadn't qualified, we would've dropped down in the world rankings and with that would've come a fairly substantial cut in funding and also potentially a cut in playing programmes.
The Federal Reserve slashed a key U.S. interest rate by three-quarters of a percentage point Tuesday, a substantial cut but smaller than many in financial markets had expected, as part of an effort to hold off a deep recession and financial meltdown.
Although Google earns no commission from any Android handsets sold, it takes a substantial cut — 30 percent — of the apps sold in the Android Store.
With the economy showing signs of crumbling after a long run of prosperity, the Federal Reserve stepped in with an unexpected and substantial cut in interest rates.
In all, 62 percent of the budget's cuts come from low-income programs, and that's on top of the substantial cut in spending already in place from last year.
