off-limits

adj.

off-limits (to somebody) (used about a place) where you are not allowed to enter (जगह) जहाँ किसी को प्रवेश की अनुमति नहीं हो; निषिद्ध

The laboratory was off-limits to all the scientists other than the two selected for the project.

(used about an activity or subject) not allowed to be discussed (विषय या क्रियाकलाप) जिसपर परिचर्चा की अनुमति न हो; प्रतिबंधित

Religious issues were off-limits in school.