/ Thesaurus / S Synonyms of sanctum sanctorum Find synonyms for: Noun1. sanctum, sanctum sanctorum, retreatusage: a place of inviolable privacy; "he withdrew to his sanctum sanctorum, where the children could never go"2. holy of holies, sanctum sanctorum, sanctuaryusage: (Judaism) sanctuary comprised of the innermost chamber of the Tabernacle in the temple of Solomon where the Ark of the Covenant was keptWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: eccentric Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language