unregistered

adjective

un·​reg·​is·​tered ˌən-ˈre-jə-stərd 

: not registered: such as

a

: not having entered one's name on a voting list

unregistered voters

b

: unrecorded or not filed in the place provided by law

an unregistered motor vehicle

c

: not recorded with or certified by an appropriate breeders' association

unregistered cattle

Synonyms of unregistered

• unlisted
• unrecorded
• undisclosed
• unidentified
• unspecified

Examples of unregistered in a Sentence

an unregistered car

Recent Examples on the Web

Zhang is charged in a criminal complaint with acting as an unregistered agent of a foreign government. — Brittny Mejia, Los Angeles Times, 5 Oct. 2026

Authorities charged Zhang, 34, of Irvine, California, with acting as an unregistered foreign agent. — Reuters, NBC news, 5 Oct. 2026

The driver, identified as 54-year-old Robert Delorenzo of Stratford, was arrested and charged with reckless driving, operating an unregistered motor vehicle and failure to stop on the right side of the road. — Staff Report, Hartford Courant, 26 Sep. 2026

Owen McIntire, 20, of Parkville, faces one count of malicious destruction of property and one count of unlawful possession of an unregistered destructive device for the March 2025 incident. — Nathan Pilling, Kansas City Star, 25 Sep. 2026

Word History

First Known Use

1603, in the meaning defined above

Rhymes for unregistered

• registered

Legal Definition

unregistered

adjective

un·​reg·​is·​tered

ˌən-ˈre-jə-stərd

: not registered

charged with operating an unregistered motor vehicle

see also unregistered security at security