unsolvedmatter
nounUK /ʌnˈsɒlvd ˈmætə/
US /ʌnˈsɑːlvd ˈmætər/
A problem or question that nobody has found the answer to yet.
The missing keys were an unsolved matter for the whole week.
SYNONYMS
OTHER MEANINGS
2. A police case that has not been closed because the culprit is unknown.
The detective kept the unsolved matter on his desk for years.
3. A scientific question that researchers are still trying to answer.
How the ancient stones were moved remains an unsolved matter.
4. A disagreement that has not been settled between people.
The argument about the fence was still an unsolved matter between the neighbors.