The term 'special quality' can be broken down into two crossword solutions: AURA (4 letters) and TRAIT (5 letters). An AURA is an invisible field of energy that surrounds a person or object, and is often associated with spiritual or supernatural powers. A TRAIT is a distinguishing characteristic or quality of a person or thing, such as a personality TRAIT or physical feature. Together, these two words describe a unique quality that sets someone or something apart from the rest.