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

Officers also found several large shipping boxes containing precious metals, two unregistered firearms, and more than $105,000 in cash, according to the sheriff’s department. — Jaclyn Cosgrove, Los Angeles Times, 5 Sep. 2026

The group also said its eligible-but-unregistered reports contain limited contact information, not Social Security, driver’s license, or state identification numbers, and that only ERIC employees process member data. — Kaelan Deese, The Washington Examiner, 4 Sep. 2026

Russian forces are clamoring for Rassvet after SpaceX cut off access in February to the Starlink network by unregistered user terminals in Ukraine, circumventing Russia’s illicit use of satellite communications for military operations. — Stephen Clark, ArsTechnica, 2 Sep. 2026

Doctors interviewed for this story say past measures have been stopgap solutions -– for example, cracking down on unregistered clinics in Taunsa and suspending a local hospital superintendent. — Betsy Joles, NPR, 2 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