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

As a protective measure, the White House might ask AI companies to increase their security practices to prevent espionage and exfiltration of the most capable versions of the technology (consider that a handful of unauthorized users have reportedly gained access to Mythos). —Matteo Wong, The Atlantic, 27 Apr. 2026

Individual states, including New York and California, already have right-of-publicity laws that prevent unauthorized commercial use of a person’s image and likeness. —Todd Spangler, Variety, 27 Apr. 2026

More than $1 million was drained through unauthorized transactions, including purchases of gold and cryptocurrency. —Stepheny Price, FOXNews.com, 27 Apr. 2026

Swift and McConaughey are far from alone in fearing AI’s unauthorized use of their likeness and voice. —Theresa Braine, New York Daily News, 27 Apr. 2026

Word History

First Known Use

1597, in the meaning defined above

Rhymes for unauthorized

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