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

Two women, a child and an officer were injured when an unidentified gunman opened fire near a Fort Worth park where a community event was being held on East Rosedale Street on Saturday night, police said. —Lillie Davidson, Fort Worth Star-Telegram, 7 June 2026

The suspect, who remains unidentified as the investigation continues, was pronounced dead at the scene. —Dean Fioresi, CBS News, 7 June 2026

However, Nickell's killer remained at large and unidentified for over a decade. —Caroline Blair, PEOPLE, 5 June 2026

The unidentified fan ran onto the court midway through the game's final quarter, appearing to try to take a selfie next to Wembanyama. —Chantz Martin, FOXNews.com, 4 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