The phrase "a growing trepidation among" is correct and usable in written English.
It can be used to describe an increasing sense of fear or anxiety felt by a group of people regarding a particular issue or situation.
Example: "There is a growing trepidation among the community about the potential impacts of climate change on their livelihoods."
Alternatives: "an increasing fear among" or "a rising anxiety within".
TO judge from lobby talk during performances by the New York City Opera this spring and continuing chat on opera blogs, there has been growing trepidation among the company's supporters over the coming of Gerard Mortier.
China greeted its new prospects as a permanent American trade partner with official applause today, but there is growing trepidation as the country now shifts its focus to its future membership in the World Trade Organization.
Yet soon the cheerful mood may give way to growing trepidation over the difficult months ahead.Pressure on the prime minister for a reshuffle had grown during a year which has seen relations sour between the Congress Party and some coalition allies.
Labour's growing trepidation is balanced by the Tories' optimistic pragmatism.
As she navigates the plot with trepidation, cynicism, and a growing sense of unease, so do we.
The news that My Bloody Valentine are bringing the noise again will prompt a certain trepidation among those who saw them either at their reunion shows in 2008, or first time round.
The fund's project has plotted the old walls on a map, causing trepidation among Iraqis who live along them now.
Bishop Ricard Pereira Díaz of the Methodist church here said he has noticed a growing number of government and military officials among the worshipers here, a trend in other contexts met with trepidation.
The possibility of being infected by a candidate vaccine led to trepidation among participants: "I am HIV-negative and I have kept myself free of HIV for all these years…If I become HIV-positive because of a [test] vaccine I'll be punished for a lifetime.
