"unaddressed problem" is a perfectly acceptable phrase in written English.
You can use it when referring to an issue that is not being adequately addressed or managed. For example: "The city's unaddressed problem of homelessness continues to worsen despite efforts to find a solution."
Alison Fleming wants to talk about a big unaddressed problem in education: the lack of female primary school headteachers.
Peter Provet, Odyssey House's president, calls addiction among those who are middle-aged and beyond "an unspoken, unaddressed problem".
Using these and other relatively inexpensive measures, the hospital has significantly reduced the number of patients who develop deadly drug-resistant infections, long an unaddressed problem in American hospitals.
Another unaddressed problem is a systematic performance comparison between S-IDNC and G-IDNC.
Discovering inter-sequence relationships among collections of videos is still a largely unaddressed problem.
While errors and deviations from incentivized users received much attention, an important and largely unaddressed problem is dealing with users willing to invest time and resources to actively attack a crowdsourcing system [47] [51].
"And slowly they began to tell me about serious, unaddressed problems.
Veterans who lack basic coping mechanisms, are actively having flashbacks or who have unaddressed problems with substance abuse should probably not enter the simulator, Dr. Kramer said.
The French Revolution did not create the continentwide crisis that followed in its wake; rather, the revolutionary repercussions that rocked polities and societies after 1789 arose from the long-standing and unaddressed problems of the old regime.
They have won, for now: The club remains closed, Mr. Post said, and unaddressed problems include low ceilings, inadequate exits and staircases, and the lack of a sprinkler system and required permits.
This followed two months of unaddressed problems that have crippled aviation in a vast country in which flying is often the only way to get around.They began when an executive jet collided with a commercial aeroplane in mid-air, knocking it out of the sky and killing 154 people.
