The phrase "an excessively large" is correct and usable in written English.
It can be used to describe something that is larger than what is considered normal or acceptable.
Example: "The project required an excessively large budget, which raised concerns among the stakeholders."
Alternatives: "an overly large" or "a disproportionately large".
As the late Alan Davidson puts it in The Oxford Companion to Food, "In the latter part of the 20th century, creme caramel occupied an excessively large amount of territory in European restaurant dessert menus," largely thanks to their convenience for the restaurateur.
He is insisting on an excessively large tax cut.
But even before the Excursion came to market, environmentalists attacked it as an excessively large gas-guzzler.
It can cause problems, but it doesn't impoverish the country the way an excessively large mortgage impoverishes a family.
There is a mathematical susceptibility to skewing of the value by having an excessively large number of low findings.
The township maintains that an excessively large deer population harms the environment and is dangerous to drivers, who swerve to avoid them.
The decision of the city and the Metropolitan Transportation Authority to turn over the Coliseum site to the high bidder made an excessively large building inevitable.
The Central Jurisdiction was also plagued by a lack of resources and the challenge of administering an excessively large geographic area.
JD said it had inherited a business with a severe lack of stock in many core lines as well as an excessively large and overrented store portfolio.
However, TiB2 particles appear to survive because an excessively large misfit prevents the Ti5Si3 phase from forming on the surface of TiB2.
"They chose to build an excessively large, excessively expensive bridge when a smaller alternative that would have protected the views and pristine nature of the river would have been better," Ms. Hardin said.
