"growing inability" is correct and can be used in written English.
For example, you might say "Her growing inability to trust people presented a major obstacle to her success."
But lately the country's growing inability to hold its liquor has taken on the scope of a national crisis.
The plan was to exploit the mainstream media's growing inability to finance investigative reporting by doing it for them.
One medic said that hospitals' growing inability to have a full complement of doctors on duty meant "we don't have time to review patients properly.
But the real risks are ill health, obesity and a growing inability among children "to assess risks to themselves and others".
Despite the evidence of hospitals' growing inability to treat patients within the set timeframes, and more and more people facing long delays for care, the Department of Health insisted hospitals were performing well.
A13 New Medicaid Program A growing inability to pay rising Medicaid costs has led Vermont into an innovative deal with the federal government that critics fear could jeopardize the program, a safety net dating to the Great Society.
These dangers are leading to an ever-growing inability to take the time needed to solve the challenges of growing income inequality, affordable and accessible health care and child care and how we make time available to spend with our children, family and friends -- basically, all the things that make life worth living.
The UK entertainment industries are working together to tackle a growing problem, the inability of audiences to spot the difference between pirate and legal websites.
Not knowing what was wrong, I stopped and grabbed a burger, thinking some food might change my growing weakness and inability to breath.
The growing shortfall reflects his inability to easily claw back $700 million in customer money that ended up in accounts overseas.
"This has led to growing criticism about the inability of the transitional government to deliver on security, which risks undermining its authority".
