Synonyms of 'sacrosanct'
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Hallowed is used to describe something that is respected and admired, usually because it is old, important, or has a good reputation.
Their resting place is in hallowed ground.
If something is inviolate, it has not been or cannot be harmed or affected by anything.
We believed our love was inviolate.
Thesaurus for sacrosanct from the Collins English Thesaurus
If you describe something as sacrosanct , you consider it to be special and are unwilling to see it criticized or changed.