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

• anonymous
• certain
• given
• one
• some
• unnamed
• unspecified

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

Kimberly Sullivan calls 911 to report house fire More bodycam footage shows a police officer arriving to the scene and yelling at an unidentified person through a window, telling the person to exit the home. —Peter D'abrosca, FOXNews.com, 2 Apr. 2025

An unidentified male victim was rushed to Bridgeport Hospital around 6 p.m., according to News 12. —Brian Niemietz, New York Daily News, 1 Apr. 2025

Decades passed without any answers for surviving relatives of the unidentified service members. —Sarah Kuta, Smithsonian Magazine, 1 Apr. 2025

The cheating rumors all started after Paige was spotted with an unidentified man at an Eagles game in January 2025. —Jenzia Burgos, StyleCaster, 27 Mar. 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