The phrase "an increasingly substantial" is correct and usable in written English
It can be used to describe something that is growing in importance, size, or significance over time.
Example: "The research indicates that there is an increasingly substantial impact of climate change on global weather patterns."
Alternatives: "a progressively significant" or "a growing considerable"
It is also an increasingly substantial business in itself (see chart).
One of the many effects of this overvaluation, as most 20-somethings and many 30-somethings know, has been to put home ownership – certainly in southern England – a long way beyond their reach, unless they band together or rely on an increasingly substantial leg-up from their parents.
As another colleague, Jane Perlez, reports, while the Chinese government is not changing its position in public, there are signs that an increasingly substantial debate is under way here, not just among officials but also more broadly among analysts, on the wisdom of continued support.
CD has substantial health and social costs and there is an increasingly strong case for screening in early childhood [ 2].
In 1960, Dee starred opposite Poitier in the original production of Lorraine Hansberry's "A Raisin in the Sun," which became a major theatrical hit, furthering her increasingly substantial artistic reputation.
This challenging goal will require histological laboratory investigations of the human brain to resume their former prominence and to play an increasingly more substantial role in brain mapping research.
Our online presences are increasingly substantial, important and valuable to us – and this means there's an increasing demand that they exist within services that offer security and a variety of levels of visibility, rather than an information free-for-all.
On Friday, Cain gave his critics more grist for their increasingly substantial mill.
Barney Kessel, who has died aged 80, was one of the founding fathers of that increasingly substantial tradition.
The dual concept makes sense if you buy into the theory that you need increasingly substantial host cities to support the Olympic supporting cast.
At Inverness Caledonian Thistle, Butcher was a manager in his pomp; the team even climbed to the top of the division and the work being carried out in the Highlands was increasingly substantial.
