What is another word for the holy of holies?
Pronunciation: [ðə hˈə͡ʊli ɒv hˈə͡ʊliz] (IPA) 
The phrase "the holy of holies" refers to a sacred or deeply revered place or position. Synonyms for this phrase include "the inner sanctum," "the most sacred place," "the sanctum sanctorum," "hallowed ground," and "the sacred precinct." Each of these synonyms emphasizes the idea of a place that is set apart from the rest, and is considered sacred or holy for various reasons. Whether it's a physical location like a temple or religious site, or a more abstract concept like a cherished idea or belief, these synonyms all convey a sense of reverence and sanctity.
