unsanctioned

adjective

un·​sanc·​tioned ˌən-ˈsaŋ(k)-shənd 

: lacking effective or authoritative approval or consent : not sanctioned

an unsanctioned boxing match

… a solution unsanctioned by educated custom …

—Edward Finegan

Examples of unsanctioned in a Sentence

Recent Examples on the Web

OpenAI had described instances where agents communicated with each other through unsanctioned message boards, uploaded files to the internet, and shared files with each other. — Lim Hui Jie, CNBC, 21 Sep. 2026

Prompt injection, training data poisoning, model manipulation, agent permission abuse and the leakage of sensitive information into unsanctioned tools create new exposures and expand the attack surface. — Rob Sloan, Forbes.com, 18 Sep. 2026

The unsanctioned parades of cars decked out in Mexican flags have previously led to major traffic jams and impasses for emergency vehicles. — Allison Kiehl, Chicago Tribune, 11 Sep. 2026

In all, 1,200 agents sent more than 70,000 messages and files through the unsanctioned message board, according to an independent investigation from the AI research nonprofit METR. — Dan Goodin, ArsTechnica, 27 Aug. 2026

Word History

First Known Use

1785, in the meaning defined above

Rhymes for unsanctioned

• sanctioned