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

Upon arrival, officers discovered an unidentified male, approximately 30 to 35 years of age, unconscious and unresponsive inside the park. — Pat Saperstein, Variety, 24 July 2026

The unidentified Spider-Man hero then jumps out of his car to assist the other person, pushing the wheelchair all the way across the street before the light switched over. — Joey Nolfi, Entertainment Weekly, 23 July 2026

Authorities said a suspect was identified through investigative genetic genealogy, a process that uses unidentified crime scene DNA, genealogical research and historical records to identify unknown DNA. — Marlene Lenthang, NBC news, 22 July 2026

Even before the oyster fisherman with the Totenkopf chest ink officially stepped out of the race, Dempsey’s name was being floated by an unidentified Democratic group polling Maine voters about possible replacements. — Benjamin Svetkey, HollywoodReporter, 22 July 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