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

Some unauthorized immigrants in Abbotsford would rather self-deport than risk being jailed and forcefully returned to their native country. —Rick Barrett, jsonline.com, 3 Sep. 2025

This initiative aims to safeguard fans against invalid or unauthorized resale and is available to fans subject to federal and local regulations. —Michelle Kaufman, Miami Herald, 3 Sep. 2025

The unauthorized use of AI platforms can unknowingly expose organizations to data privacy issues, compliance violations and even disinformation risks. —Ofer Klein, Forbes.com, 2 Sep. 2025

The system gives pilots two aural alerts when an unauthorized aircraft enters the runway on a collision course with the authorized aircraft. —Asher Redd, FOXNews.com, 1 Sep. 2025

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