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

Wise County Public Schools will keep the unidentified employee on administrative leave pending the external review, and Union High School will proceed with its football season under interim coach Jay Edwards. —Robert Alexander, MSNBC Newsweek, 25 Nov. 2025

The unidentified man was a former nurse and is currently unemployed. —Escher Walcott, PEOPLE, 25 Nov. 2025

The unidentified body that was discovered on Highway 33 in Ventura County back in 1981 was identified on Monday as a Vietnam War veteran from Pennsylvania. —Dean Fioresi, CBS News, 24 Nov. 2025

Amid the search, Wise County Public Schools said an unidentified staff member was placed on administrative leave with pay, pending an internal investigation into external allegations. —Sarah Rumpf-Whitten, FOXNews.com, 24 Nov. 2025

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