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

Her hope is that when unidentified remains are found, they can be checked against the database to see if that person was from the Blackfeet Tribe, and to possibly link the remains to family members. — Dateline Nbc, NBC news, 6 Aug. 2026

Per the publication, the model breached an unidentified company’s systems and changed its internal environment. — Victor Tangermann, Futurism, 6 Aug. 2026

Authorities announced on Thursday that two unidentified bodies, both in a state of decomposition, have been found buried in the yard. — Emily Shapiro, ABC News, 6 Aug. 2026

OpenAI published excerpts of text messages between an unidentified Apple employee and Liu that purport to show the request for help. — Bloomberg, Mercury News, 4 Aug. 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