unauthorized

adjective

un·​au·​tho·​rized ˌən-ˈȯ-thə-ˌrīzd 

: not authorized : without authority or permission

an unauthorized biography

unauthorized communications

was unauthorized to act for her husband

Examples of unauthorized in a Sentence

Recent Examples on the Web

But no one was happy, particularly fans of the singer who reacted with anger at the unauthorized use. — Stylecaster Editors, StyleCaster, 9 July 2026

Lee, who lived a half mile from the laundromat, had three arrests for unauthorized use of a motor vehicle, all from more than a decade ago, police said. — Rocco Parascandola, New York Daily News, 8 July 2026

The purchase reflects a broader effort to improve protection at military bases as unauthorized drone activity becomes more common. — Aamir Khollam, Interesting Engineering, 7 July 2026

This means letting creators impose restrictions, monitor usage, and prevent unauthorized endorsements or exploitation. — Jack Dunn, Variety, 9 July 2026

Word History

First Known Use

1597, in the meaning defined above

Rhymes for unauthorized

• americanized
• anathematized
• collateralized
• contextualized
• conventionalized
• demilitarized
• demineralized
• departmentalized
• depersonalized
• industrialised
• industrialized
• materialised