be forbidden
Definitions
To be officially or legally prohibited or disallowed.
To be excluded or prevented from doing something by an authority or rule.
Examples
It will be forbidden to enter the restricted area without proper authorization.
Smoking will be forbidden in all public buildings starting next month.
Synonyms
be prohibited be banned be disallowed be proscribed be off-limits be taboo be restricted
Antonyms
be permitted be allowed be authorized be sanctioned be approved be legal be permissible