The phrase "an undercurrent of worry" is correct and usable in written English.
It can be used to describe a subtle or underlying feeling of concern that may not be immediately obvious.
Example: "Despite the cheerful atmosphere at the party, there was an undercurrent of worry about the upcoming layoffs at work."
Alternatives: "a sense of unease" or "a hidden anxiety".
But these moments of peace belie an undercurrent of worry: One countryside reveler uses leisure time to practice hurling fake grenades in the forest.
And the number of deans charged with enforcing discipline more than doubled, to 14 from 6. Yet with all the excitement about change for the better, an undercurrent of worry still cut through the classrooms.
An undercurrent of worry, however, ran through the celebratory mood, owing to the ascension of Donald Trump in the presidential race and the Republican lock on both houses of Congress and soon, the U.S. Supreme Court.
Amid much hoopla surrounding the 1970s construction of Metrorail — heralded as a marvelous creation that would usher the capital area into the future, advancing the region economically and socially — there was an undercurrent of worries.
As she grows older, when this is done regularly as part of your parenting life with her, you may learn in more complicated examples that there is an undercurrent of worries, fears, struggles, or other kinds of troubles that get blown into other misbehaviors.
Still, there was a definite undercurrent of worry, a certain anxiety that sprang as much from fear as disbelief.
"But there's a strong undercurrent of worry because of those soldiers who have left".
Beneath the show-must-go-on euphoria that came with the end of the strike was a definite undercurrent of worry: How much damage had the strike done to Broadway?
On this relationship, Beaver feels that "Bobby's concerned about them both, with Dean's sense of self, but there's a sort of undercurrent of worry about Sam.
So worrying about interest-rate spreads in the commercial paper market might seem uncalled for, even if they reflect an undercurrent of investor concern.
