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

In their preliminary investigation, homicide detectives determined that multiple unidentified suspects fired handguns inside the bar in what appears to be an unprovoked shooting, police said. —Brayden Garcia, Fort Worth Star-Telegram, 6 Oct. 2025

Jets can be scrambled from the base to intercept unidentified aircraft near British airspace. —Jack Royston, MSNBC Newsweek, 6 Oct. 2025

Over the weekend, the network addressed the incident on several occasions after he was arrested on three misdemeanor counts, following an altercation in which he was stabbed and another unidentified man suffered lacerations. —Glenn Garner, Deadline, 5 Oct. 2025

Police found two unidentified girls unconscious and unresponsive on top of a J train. —Eduardo Cuevas, USA Today, 4 Oct. 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