Synonyms of unauthorized in English:

unauthorized


See definition of unauthorized

adjective

1‘they issued a ban on all unauthorized rallies’

SYNONYMS
unofficial, unsanctioned, uncertified, unaccredited, unlicensed, unwarranted, unapproved
disallowed, prohibited, banned, barred, forbidden, outlawed, illegal, against the law, illegitimate, illicit, interdicted, proscribed
informal wildcat
ANTONYMS

authorized, official, lawful