unauthorized

Not officially approved

Unauthorized means without permission or approval.

An unauthorized biography is written without the subject's cooperation.

Unauthorized access to a computer system is illegal entry.

The word often appears in official contexts: unauthorized personnel, unauthorized use of funds.

Something unauthorized lacks the sanction of whoever controls access or approval.

illegal

illicit

Prohibited by law

banned · contraband · black-market · bootleg · counterfeit · piracy · smuggling · forgery · infringement · fraudulent

forbidden

prohibited

Officially not permitted

barred · disallowed · taboo · verboten · outlawed · vetoed · unsanctioned · unapproved · unaccredited · unendorsed

intrusion

breach

Breaking of agreement

break-in · penetration · incursion · entry · intruder · interloper · squatting · boundary-crossing · uninvited · unwelcome

covert

clandestine

Concealed from authorities

undercover · secret · hidden · backdoor · undisclosed · unofficial · covert · undetected · unannounced · sneaky

cyber

hacking

Infiltrating protected digital systems

exploit · cracking · firewall · authentication · password · login · credentials · two-factor · permissions

Categories
Opposites
permission/sanction

unauthorizedauthorized

Given official permission

permitted · approved · sanctioned · allowed · consented

legitimacy/official status

unauthorizedofficial

Authority-sanctioned person or status

legitimate · licensed · certified · legal · accredited

legality

unauthorizedlegal

Permitted by statute

lawful · legitimate · licit · permissible · allowable

Phrases
Family

author, authority, authorize, authorized, preauthorization, authoritative, authorization, authorizing, authorizes

Familiarity
Top 50,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Negative · Everyday, not technical · Rated G