unauthorized

If something is officially not approved, it's unauthorized. An unauthorized biography is written without the consent or cooperation of its subject.

If a person lacks the authority to do something, you can describe them as unauthorized: "Sorry, I'm unauthorized to let you into the secret clubhouse." Otherwise, this adjective means "not permitted." Many unauthorized things are also illegal, like an online company's unauthorized use of personal information. To authorize is to give approval.

Definitions of unauthorized
1

adj without official authorization

“an unauthorized strike”
Synonyms:
unauthorised, wildcat
unofficial
not having official authority or sanction

adj not endowed with authority

Synonyms:
unauthorised
self-appointed
designated or chosen by yourself
unaccredited, unlicenced, unlicensed
lacking official approval
illegitimate
of marriages and offspring; not recognized as lawful
unofficial
not having official authority or sanction
Antonyms:
authorised, authorized
endowed with authority
accredited, commissioned, licenced, licensed
given official approval to act
approved, sanctioned
established by authority; given authoritative approval
canonised, canonized, glorified
accorded sacrosanct or authoritative standing
empowered, sceptered, sceptred
invested with legal power or official authority especially as symbolized by having a scepter
lawful
conformable to or allowed by law
legitimate
of marriages and offspring; recognized as lawful
official
having official authority or sanction
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