unauthorized
/ʌnˈɔːθərʌɪzd
/(also unauthorised)
adjective
Not having official permission or approval: unauthorized access to the computer system...
- Four other bishops were detained for refusing to join the official church or conducting unauthorized services.
- He is suspected of breaking Japanese laws prohibiting unauthorised computer access.
- No unauthorised personnel could gain access and he had no reason to suspect any of his staff.
Synonyms
unofficial, unsanctioned, uncertified, unaccredited, unlicensed, unwarranted, unapproved;
disallowed, prohibited, banned, barred, forbidden, outlawed, illegal, against the law, illegitimate, illicit, interdicted, proscribed
informal wildcat