The phrase "grand high witch" refers to the leader of a group of witches. Some synonyms for this term can include "supreme witch," "high priestess of witches," or "queen witch." Other terms that could be used for this role might include "coven leader," "master witch," or "witch monarch." Depending on the context, the phrase might also be replaced with more specific terms such as "dark queen of magic," "mistress of the occult," or "leader of the black arts." Regardless of the phrasing used, the "grand high witch" is typically portrayed as a powerful and intimidating figure, with a commanding presence that inspires fear and respect among her followers.