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

Luis Mauricio Flores Ordonez, 33, was charged with owning an unregistered aircraft that was operated by another person. — Kelly O'Donnell, NBC news, 5 July 2026

The Zion Church is among the largest underground or house churches in China that are unregistered with authorities. — Didi Tang, Los Angeles Times, 5 July 2026

Alvarez is accused of flying his unregistered DJI Mini 4 PRO drone around the stadium while the airspace was under a temporary flight restriction, officials said. — Lillie Davidson, Fort Worth Star-Telegram, 3 July 2026

Julio Osario Santos, 51, faces charges of operating a motor vehicle under the influence, negligent pedestrian, improperly parking on a highway, operating an unregistered motor vehicle, operating a motor vehicle without insurance and operating under suspension, according to Connecticut State Police. — Justin Muszynski, Hartford Courant, 28 June 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