off-limits
🇺🇸
/ˌɔːf ˈlɪmɪts/
🇬🇧
/ˌɒf ˈlɪmɪts/
A place where people are not permitted to enter or go.
The construction site was off-limits to everyone except the workers.
A topic that is not allowed to be talked about.
The manager declared that the company's financial issues were off-limits during the meeting.