sanctum /sangkˈtəm/

1. (esp in the phrase inner sanctum) a sacred place
2. A (very) private room

sanctum sanctorum noun

1. The holy of holies, the inner chamber of the Jewish tabernacle
2. Any specially reserved retreat or room (informal)

• privies
• priviest
• privilege
• privileged
• privilege of parliament
• privileges
• privileging
• nosies
• nosiest
• nosily
• nosiness
• nosinesses
• nosing
• nosings
• no skin off one's nose
• nosocomial
• nosode
• nosodes
• nosographer
• nosographers
• nosographic
• nosographies
• nosography
• nosological
• nosologies