Englishunauthorized
adjective
they issued a ban on all unauthorized rallies:
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.