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

Kirkley said the driver self-reported the incident, but his actions still violated company policy prohibiting unauthorized riders. —Quinn Clark, jsonline.com, 7 Mar. 2026

Issues like employees, outdated software, and weak access controls can make sensitive data vulnerable to unauthorized access. —Malana Vantyler march 6, Miami Herald, 6 Mar. 2026

Over a 14-year period from 2012 to 2016, hundreds of thousands of Wells Fargo’s Community Bank employees opened millions of unauthorized or fraudulent accounts and other financial products to meet excessive sales goals. —Charlotte Observer, 5 Mar. 2026

This has allowed this unauthorized user unfettered access to those frequencies to transmit hateful and threatening messaging, potentially disrupting vital police, fire and EMS communications. —Andy Sheehan, CBS News, 5 Mar. 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