The phrase "a swiftly increasing" is correct and usable in written English.
It can be used to describe something that is growing or rising quickly, often in contexts related to trends, statistics, or changes over time.
Example: "The report highlighted a swiftly increasing demand for renewable energy sources in the market."
Alternatives: "a rapidly growing" or "a quickly rising".
This annual business plan calls for a year of slow but steady growth, followed by a year of swiftly increasing sales.
They are there as a way of swiftly increasing the level of pain among Palestinians, in the hope that Palestinian leaders will then deal more effectively with militant groups.
This is a great addition to their swiftly increasing number of relevant products.
TNK-BP took advantage of high crude oil prices and grew swiftly, increasing production 14percentt in 2003.
I couldn't stop laughing/vomiting for the next five minutes as my children looked on in sheer horror, the swiftly increasing future debt for counselling painted on their faces like my vomit on the shoes of the quiet, wide-eyed girl in the front row.
He added that the government would focus on creating a pro-business environment that would swiftly increase spending.
As soon as the sanctions are lifted, Iran plans to swiftly increase oil exports by 500,000 barrels a day, with an additional 500,000 a day in the following six months.
Mr. Brennan flew to Saudi Arabia within a week to see him, and the United States swiftly increased its electronic eavesdropping and other spying in Yemen.
"This is a giant step forward," Mr. Ashcroft said at the Justice Department, adding that he would swiftly increase the number of lawyers both at the Federal Bureau of Investigation and in prosecutors' offices around the country to seek authorization for new wiretaps and surveillance orders to combat terrorism.
He swiftly increased the cooperative's milk production, but to expand it further he needed a scientific breakthrough.
