too important or special to be changed
sacrosanct - sacred
Something described as ‘sacrosanct’ is considered too important to change, interrupt, or criticize. Originally used in reference to religious rituals or traditions, it is now more commonly used in relation to a person’s habit or routine, or, more broadly, something considered an inviolable human right.
Sunday is sacrosanct for me. It’s a day for family, not work.
The freedom to speak truth to power is sacrosanct in a free society.
I believe that with the new regulations, the CEO has sabotaged the sacrosanctity of workers' rights to take industrial action to improve their working conditions.