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 of unidentified

• 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 victim, who also remains unidentified, was hospitalized in critical condition with severe injuries, deputies said. — Dean Fioresi, CBS News, 27 June 2026

Haney said that the Palisades Fire was a separate blaze started by unidentified arsonists and that prosecutors lacked physical evidence linking Rinderknecht to arson. — N'dea Yancey-Bragg, USA Today, 26 June 2026

Detainees later told authorities where to search for the bodies, leading Mexican prosecutors to uncover four unidentified bodies in the mountains. — Megan Janetsky, Chicago Tribune, 26 June 2026

Investigators discovered the unidentified man was Gonzalez’s stepfather, the report read. — Devoun Cetoute, Miami Herald, 25 June 2026

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