sacrosanct
adjectiveUK /ˈsæk.rə.sæŋkt/
US /ˈsæk.rə.sæŋkt/
So special and important that it must never be changed or treated badly.
The family's Sunday dinner is sacrosanct, so no one ever misses it.
RELATED WORDS
OTHER MEANINGS
2. Considered too important to be questioned or criticized.
In that company, the boss's decisions are sacrosanct.
3. Made holy or blessed by a religious ceremony.
The sacrosanct ground around the old temple was kept clean and quiet.
4. Set apart as special and deserving deep respect.
To the fans, the team's original stadium is sacrosanct.