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

Officials believe the effort could uncover hundreds of previously unregistered rentals. —Meghan Schiller, CBS News, 13 Apr. 2026

He has been charged with possession of an unregistered firearm and damage and destruction of property by means of explosives. —Jared Perlo, NBC news, 13 Apr. 2026

He has been charged by federal prosecutors with possession of an unregistered firearm and damage and destruction of property by means of explosives. —Juan Lozano, Fortune, 13 Apr. 2026

Additionally, Moreno-Gama has been charged with two federal counts -- damage and destruction of property by means of explosives and possession of an unregistered firearm, officials said Monday. —Luke Barr, ABC News, 13 Apr. 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