Translation guide
A problem that has not been solved or settled yet. In Japanese, this is commonly expressed with words like 未解決の問題 or 懸案, but the natural choice depends on context and formality.
This is an unresolved problem.
There are still many unresolved problems.
A pending issue or matter that has been left unresolved, often used in business or formal settings.
That problem has been an unresolved issue for many years.
A more colloquial way to say 'problem that hasn't been solved'. Natural in conversation.
There are still some unresolved problems.
A matter that was discussed but not settled, often left for future discussion.
A lingering personal issue, often emotional or psychological, that hasn't been dealt with.
A problem that has not been solved in a field like mathematics, physics, etc.
Standard term for an unsolved problem in academic fields. Often used in mathematics (e.g., Riemann hypothesis).
The Riemann hypothesis is one of the unsolved problems in mathematics.
While 未解決の問題 is correct, it can sound stiff in casual conversation. In everyday speech, it's often more natural to rephrase, e.g., まだ解決してない問題 or simply まだわからない (still don't know).
その件は持ち越しになった。
That matter was left unresolved (carried over).
Unresolved feelings can sometimes cause stress.