demesneThis word is used in the book to describe the territory or realm of a ruler or authority.
Definitions:
Land attached to a manor and retained for the owner's use."The castle and its surrounding demesne were breathtakingly beautiful."
eldritchA term often used to describe the eerie, other-worldly nature of the enchanted places in the book.
Definitions:
Weird and sinister or ghostly."They found themselves in an eldritch forest, filled with whispering trees."
quaffThis is a word used in the book for the act of drinking, often used in the context of celebratory drinking.
Definitions:
Drink (something, especially an alcoholic drink) heartily."They gathered in the great hall to quaff the finest ale in celebration."
unsulliedThis word is used to often describe the purity, both literally and metaphorically, of characters and places in the book.
Definitions:
Not spoiled or made impure."The unsullied snow spread out before them, untouched by any creature."