"growing imperative" is a correct and usable term in written English.
It can be used to refer to something that is becoming increasingly important or necessary. For example, "With the increasing severity of global warming, protecting the environment is a growing imperative."
In 1989, Helmut Kohl, then chancellor of West Germany, was likewise unexpectedly confronted with the fall of the Berlin Wall and a growing imperative for German reunification.
"There is a growing imperative to join up services so they fit around people's lives and make the best use of resources.
But, as global climate change continued to accelerate, my personal vision of Alaska as a place apart was challenged in an inescapable way, and I felt a growing imperative to expand my music to embrace a broader vision of the world.
But as more of these egregious, overreaching policies come to light — and as more of the objects with which we are surrounded in our homes, cars and lives are networked up and brought online, and thus given (at very least) the technical ability to snoop on us — there is a growing imperative to clean up the darker corners of the digital commerce sphere.
Indeed, with energy independence a growing imperative in the U.S., it may signal the dawn of a new "biobased" economy.
Despite the growing imperative for bilingualism, only about half of the people I know in France have a professional working command of the language in order to be thought of as a Brooklyn-style hipster, you have to have a certain amount of access to Brooklyn itself, which isn't an option for many poorer people.
Yet, although the UK has the skills, there is also a growing market imperative for Hollywood to send work overseas.
Creative endeavour as a route out of frustration and social alienation was not just an appealing idea, Drew suggested, but a growing political imperative.
As the cost of water increases, there is a growing financial imperative for medium-sized companies to also invest in water monitoring technologies.
There is also a growing legal imperative for many large multinationals to start seriously engaging with labour abuses in their business operations.
There is a growing ethical imperative to feedback research results to participants but there remains a striking lack of empirical research on how people respond to individualised feedback.
