unidentified

adjective

un·​iden·​ti·​fied ˌən-ī-ˈden-tə-ˌfīd 

-ə-ˈden-

: not having a known or established identity : not identified

unidentified flying objects

an unidentified suspect

Synonyms

• one
• unnamed

Examples of unidentified in a Sentence

an unidentified worker reported the security breach

some unidentified person helped them and then left quietly

Recent Examples on the Web

The wreckage of at least one drone, still unidentified, was recovered in Czosnowka, in eastern Poland. —George Petras, USA Today, 11 Sep. 2025

The ministry added that Polish forces had also notified Belarusian forces of incoming unidentified aircraft from Ukrainian territory. —Will Gretsky, ABC News, 10 Sep. 2025

On top of that, at least two styrofoam drones, and one unidentified object, were found in the region. —Brad Lendon, CNN Money, 10 Sep. 2025

The white wines were always watery, the red wines the opposite, composed on some blend of hot weather grapes from an unidentified region. —John Mariani, Forbes.com, 8 Sep. 2025

Word History

First Known Use

1861, in the meaning defined above

Phrases Containing unidentified

• unidentified aerial phenomenon
• unidentified anomalous phenomenon
• unidentified flying object

Rhymes for unidentified

• acetaldehyde
• acetanilide
• arabinoside
• cycloheximide
• cyclophosphamide
• diethylamide
• dinucleotide
• ferricyanide
• ferrocyanide
• glutaraldehyde
• glyceraldehyde
• hydroperoxide