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

The law already in effect also allows the Illinois Secretary of State's Office to impound unregistered tow trucks and suspend tow truck registrations for unpaid Illinois Commerce Commission fines. — Adam Harrington, CBS News, 29 July 2026

Morrow was charged with discharging a firearm within 500 feet of a building, disturbing the peace, carrying a firearm without a license, and unregistered motor vehicle. — Colleen Cronin, Boston Herald, 20 July 2026

Register what matters, and do it early; an unregistered mark is an invitation. — Charles Lew, Forbes.com, 20 July 2026

For e-motorcycle riders, common violations are similar to those for other vehicles on the road — things like reckless driving and driving an unregistered vehicle or without a license, Clyde said. — Rose Evans july 17, Idaho Statesman, 17 July 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