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

But at John Kogut's retrial in 2005, the Nassau County DA's office had argued the opposite — that the unidentified DNA taken from Theresa was meaningless. —Mary Murphy, CBS News, 26 Apr. 2026

The unidentified driver was heading south on the Bronx span toward Astoria, Queens, when the crash occurred. —Thomas Tracy, New York Daily News, 24 Apr. 2026

The two remained unidentified for more than a decade, and they were not included in the charges against Heuermann. —Eric Levenson, CNN Money, 24 Apr. 2026

The case began in February 1998, when authorities received a complaint regarding a suitcase found by a group of children on Winkler Hill Road in Dover Township containing unidentified male body parts, including a pelvis and part of one leg. —Julia Bonavita, FOXNews.com, 24 Apr. 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