The investigators found an unidentified device in the abandoned car.

The shadow moved unidentifiably across the wall, leaving everyone unsettled.

Researchers struggled to address the unidentifiabilities that emerged when multiple variables were missing from the dataset.

The unidentifiableness of the ancient markings baffled the archaeologists, who could not determine their origin.

The unidentifying label on the package prevented anyone from knowing its contents.

The remains recovered from the crash were unidentifiable to the forensic team.

The committee raised concerns about the unidentifiability of the samples, which undermined the validity of the study.

During the night flight, the crew observed an unidentified aerial phenomenon that did not match any known aircraft signatures.

The research team published a detailed report on unidentified aerial phenomena observed near the coastal radar installations.

The navy launched an urgent investigation after sonar detected several unidentified submarine objects near the shipping lane.