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

• anonymous
• certain
• given
• one
• some
• unnamed
• unspecified

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 found an unidentified woman suffering from gunshot wounds. —Daniel McFadin, Arkansas Online, 19 May 2025

Connor Lotterman, 19, was struck in the head by a bullet recklessly fired by an unidentified 20-year-old suspect on May 9 at approximately 11:11 p.m., Ottowa County Sheriff's Office confirmed to Fox News Digital. —Sarah Rumpf-Whitten, FOXNews.com, 19 May 2025

But the child went unidentified for four years until authorities received a tip. —Pj Green, Kansas City Star, 17 May 2025

Five victims remain unidentified, according to the Cook County sheriff's office. —Andrew Nodell, People.com, 9 May 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