Sanctuary is a term that refers to a place or an area that offers protection and safety, especially for individuals seeking refuge. Some of the synonyms that can be used in place of this term include haven, oasis, shelter, refuge, retreat, asylum, hideaway, and safe haven, among others. Each of these terms has a slightly different connotation and may be used in different contexts. For instance, asylum may be a more formal term with legal implications, while hideaway may be more informal and used to describe a small, cozy place. Overall, these synonyms allow for a range of options when describing a place of safety and protection.