'understandable worry' is correct and usable in written English.
You can use it when referring to a worry or feeling of concern that is deemed understandable based on the context or situation. For example, "Given the current circumstances, the parents had an understandable worry about their children's safety."
Annoyed and repulsed by Evie, whose neurological illness — a seizure disorder — is an understandable worry for her parents, Gina finds the child "slightly unbearable..
The cost of chasing supplemental rent, and the fact that HMRC will be passing tenants' details on to housing associations, have caused understandable worry throughout the sector.
Much more than a minor caveat, of course, is the same understandable worry that came, inevitably, in the wake of Usain Bolt's extraordinary dash to gold in Beijing three years ago and which has dropped like the other malevolent shoe so regularly for so long in the months following the Tour.
Fox-Pitt explained the gall, or lesion had occurred during training and that he had avoided riding the horse more than was absolutely necessary in order to allow the skin condition to heal, but it was an understandable worry that was hardly helped the pair's performance in the dressage ring.
It's an understandable worry, but I think it's unfounded.
Namely, traders read, or mis-read, the minutes of the Federal Reserve's latest policy meeting and saw that "several" policy makers expressed understandable worry about the implications of the Fed's program to buy up every bond in sight in an effort to support the economy.
Accidents will happen, and they underline the understandable worries of driverless-technology sceptics.
President Obama has tried to soothe civil liberties groups' understandable worries about these proposals.
In spite of Brexit, most people in Britain still have fairly centrist views, understandable worries about their lives, and seek rational solutions to the nation's problems.
As the education ministry begins its most ambitious reforms in more than half a century, there are understandable worries that Japan will fritter away its record of success.The reformers do not belittle these achievements.
Similarly, the press have quite understandable worries about ambulance-chasing lawyers misusing the arbitration service in ways that could add disastrously to the costs of an industry already reeling from the existential disruptive threat of new technologies and competitors.
