The term 'saintly quality' can be broken down into two crossword solutions: AURA (4 letters) and PIETY (5 letters). An AURA is an invisible field of energy that surrounds a person or object, and is often associated with holiness or divinity. PIETY is a virtue that is characterized by reverence for God and devotion to religious principles. Together, these two words represent the qualities of holiness and reverence that are often attributed to saints.