unaccounted
v.describing something that has not been explained or recorded. You use this when you cannot find a reason for a change in numbers or a missing object.
v.not explained, accounted for, or recorded. Often used in the passive voice to describe discrepancies in data or missing items.
“The missing money remains unaccounted for.”
“After the audit, several thousand dollars of inventory were found to be unaccounted for, leading to a full investigation.”
“The sudden drop in the company's stock price remains unaccounted for by standard market analysis, suggesting there may be an internal factor at play.”
“Over the subsequent decades, officials have worked to uncover mass graves, revealing thousands of victims, but about 1,600 people remain unaccounted for.”
“A fifth person was feared dead and a sixth unaccounted for.”