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Showing results for unauthorized. Search instead for unautorisiert.
Definitions

unauthorized

[uhn-aw-thuh-rahyzd] / ʌnˈɔ θəˌraɪzd /
ADJECTIVE
not sanctioned, permitted
Synonyms
STRONGEST
illegal illegitimate pirated unapproved unconstitutional unjustified unlawful unofficial unwarranted wrongful
WEAK
crooked dirty no-no off base out of bounds out of line over the line shady under-the-table unsanctioned wildcat
Antonyms
STRONGEST
authorized ethical good justifiable lawful legal legitimate moral reasonable right warranted
WEAK
allowable official permitted

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Hasbro confirmed "identified unauthorized access to the Company's network" in a filing made to the US government.

From BBC • Apr. 1, 2026

Copyright Office has called for new federal legislation to protect content creators from unauthorized, AI-generated copies of their work, but no progress has been made yet.

From Salon • Mar. 23, 2026

The agency’s concern was that while these tools are marketed as flawless replacements for human experts, they are often prone to making costly, unauthorized purchases.

From MarketWatch • Mar. 19, 2026

So there were unauthorized people in the U.S.

From Slate • Mar. 16, 2026

Nowhere was this as clearly evident as in the fair’s restrictions on unauthorized photography.

From "The Devil in the White City" by Erik Larson

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.