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

In July, Anthropic described three instances where its Claude models accessed the internet during an evaluation and gained unauthorized access to the real systems of three different organizations. — Priyanka Salve, CNBC, 29 Sep. 2026

After a weekend of alarming headlines about AI mishaps, public sector breaches, and agents gaining unauthorized access to outside systems, tech and AI CEOs are descending on Washington yet again this week. — Ashley Gold, semafor.com, 28 Sep. 2026

Prosecutors allege Del Vecchio commissioned unauthorized background checks against Serfaty as well as other Del Vecchio family members amid an ongoing inheritance dispute. — Gary Baum, HollywoodReporter, 28 Sep. 2026

There’s trouble brewing at Van Nuys High, where the baseball coach has been removed for building an unauthorized batting cage during the summer. — Eric Sondheimer, Los Angeles Times, 28 Sep. 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